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Johannesson, Hanna, and Josefin Svensson. "Saltreduktion genom upplevd och associerad multisensorik : konsumenters upplevelse av sälta i livsmedel genom ett hemtest samt en enkät." Thesis, Högskolan Kristianstad, Fakulteten för naturvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-22115.
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I Sverige äter vi ca 11 g salt per dag, vilket är dubbelt så mycket som rekommenderat. Eftersom ett för högt saltintag innebär risker för hälsan, har livsmedelsföretag i ett Vinnovafinansierat projekt, på uppdrag av Regeringskansliet, gått ihop för att ta fram metoder för saltreduktion, bland annat en så kallat multisensorisk verktygslåda. Syftet med studien var att i ett sensoriskt hemtest undersöka om gillandet och upplevelsen av sälta skiljde sig mellan saltreducerade tomatsoppor med tillsatta kryddor eller aromer och en referenssoppa med ursprunglig salthalt. Ett andra syfte var att undersöka konsumenters upplevelse av sälta i livsmedelsprodukter som är vanligt förekommande i svensk matkultur, genom en enkätundersökning. I det sensoriska hemtestet visade det sig att två av de saltreducerade sopporna, en med chili och en med kryddblandning av basilika, vitlök och chili, upplevdes som mer salta än referenssoppan. Det fanns ingen statistisk signifikant skillnad i gillandet mellan sopporna, vilket betydde att de saltreducerade sopporna gillades lika mycket som referensen. I enkätundersökningen visade resultatet att de livsmedel som upplevdes saltast var bordssalt, sojasås, örtsalt samt rostade och saltade jordnötter. Flertalet livsmedel som innehöll en låg mängd eller inget salt alls, upplevdes ändå som salta. Studien visade att saltreduktion genom multisensorisk påverkan av en tomatsoppa var möjlig. I framtiden kan aromer eller toppings från livsmedel som associeras med salt användas i saltreducerade produkter.<br>In Sweden we eat about 11 g of salt per day, which is twice as much as recommended. Since too high salt intake poses risks to health, food companies in a project funded by Vinnova, on behalf of the Government Offices, have joined forces to develop methods for salt reduction, including a so-called multisensory toolbox. The aim of the study was to investigate in a sensory home use test, whether the acceptance and perception of salt differed between a salt reduced tomato soup compared to a reference soup. A second aim was to investigate consumers' perception of saltiness in food products that are commonly found in Swedish food culture, through a survey. In the sensory home use test, it turned out that two of the salt reduced soups, one with chili and one with spice blend, were perceived as most salty even though the reference soup had a higher salinity. There was no significant difference in the liking between the soups, which meant that the salt reduced soups were liked as much as the reference soup. In the survey, the results showed that the foods that were most salty were table salt, soy sauce, herb salt and roasted and salted peanuts. Most foods that contain a low or no salinity at all, were still perceived as salty. The study showed that salt reduction of a tomato soup, by multisensory influence, was possible. In the future, aromas or toppings from foods that are associated with salt can be used in salt reduced products.
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Johansson, Marina, and Klara Johansson. "Se, hör och shoppa! : En undersökning kring hur det med visuell och auditiv stimuli går att påverka kundens rörelsemönster och köpbeteende i butik." Thesis, Linnéuniversitetet, Institutionen för marknadsföring (MF), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-55687.
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Titel: Se, hör & shoppa! En undersökning kring hur det med visuell och auditiv stimuli går att påverka kundens rörelsemönster och köpbeteende i butik. Författare: Klara Johansson, Marina Johansson Handledare: Professor Bertil Hultén Examinator: Universitetslektor Leif V Rytting Kurs: Företagsekonomi III – Examensarbete inriktning detaljhandel och service management (kandidat) 15hp Problemformulering: Hur påverkas kundens rörelsemönster och köpbeteende i en butiksmiljö med hjälp av visuella stimuli samt auditivt stimuli? Syfte: Syftet med examensarbetet är att undersöka, analysera och klargöra huruvida kundens rörelsemönster och köpbeteende kan påverkas med hjälp av sensoriska stimuli. Vi vill med hjälp av en multisensorisk upplevelse, vita pilar samt ljudet av fågelkvitter, försöka påverka kundens vägval i butiken för att bidra till att denne ska uppmärksamma större del av butiksytan. Metod: Examensarbetet har utformats med ett deduktivt angreppssätt. Vi har gjort en kvantitativ analys med en experimentell ansats. En omfattande litteraturstudie har legat till grund för de hypoteser som formulerats, i syfte att svara på forskningsfrågan. Primärdata har samlats in genom sammanlagt 1347 observationer på Plantagen i Kalmar. Slutsats: En slutsats av arbetet är att kunderna påverkas till att följa visuella stimuli i form av pilar. Det är därmed möjligt att påverka kunden att se mer av butikens yta med hjälp av visuella stimuli. Vi kan även visa att tillsättning av auditivt stimuli och visuella stimuli påverkar köpbeteendet i form av tid spenderad i experimentzonen, men det behövs vidare forskning för att utreda i vilken grad påverkan sker. Nyckelord: Sinnesmarknadsföring, visuell stimuli, auditiv stimuli, butiker, rörelsemönster, multisensorik, kongruens<br>Title: See, hear & shop! A Study of how visual and auditory stimuli can influence the customer's movement patterns and buying behaviour in store. Authors: Klara Johansson, Marina Johansson Supervisor: Professor Bertil Hultén Ph.D. Examiner: Senior Lecturer Leif V Rytting Ph.D. Course: Business economies III – Retail and service management (C level) Issues: How are the customer's movement patterns and buying behaviour affected in store with the help of visual and auditory stimuli? Purpose: The purpose of this study is to investigate, analyse and clarify whether the customer's movement patterns and buying behaviour can be affected by means of sensory stimuli. With the help of sensory marketing, white arrows and bird song, we want to influence the customer's choice of direction in the store with the purpose of making the customer notice a wider part of the store. Methodology: The thesis has been designed with a deductive approach. We have done a quantitative analysis with an experimental approach. An extensive search for literature has been the basis of the hypotheses formulated, in order to answer the research question. Primary data were collected through a total of 1347 observations at Plantagen in Kalmar. Findings: A finding of this thesis is that customers are influenced to follow the visual stimuli by the means of white arrows. It is thereby possible to affect customers to notice a wider part of the store by the means of visual stimuli. We can also show that adding auditory stimuli and visual stimuli can affect the buying behaviour in the matter of time spent in the experimental zone, although further research is required to exam to which extent the impact occurs. Keywords: Sensory marketing, visual stimuli, auditory stimuli, in stores, movement patterns, multisensory, congruence
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Cao, Jialan [Verfasser], Michael [Akademischer Betreuer] Köhler, Andreas [Akademischer Betreuer] Schober, and Stefan [Akademischer Betreuer] Nagl. "Mikrofluidisches System mit integrierter Multisensorik für mehrdimensionale Screenings in der miniaturisierten Umwelttoxikologie / Jialan Cao. Gutachter: Andreas Schober ; Stefan Nagl. Betreuer: Michael Köhler." Ilmenau : Universitätsbibliothek Ilmenau, 2015. http://d-nb.info/107413933X/34.
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Åman, Katarina. "Jag kände en utställning! : Sinnesintryckens betydelse för förståelsen av en utställning." Thesis, Umeå universitet, Institutionen för kultur- och medievetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-121863.
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Berton, Linda. "Intensivundervisning – ett multisensoriskt approach : En fallstudie av en SUM-elevs grundläggande taluppfattning under multisensorisk intensivundervisning." Thesis, Linnéuniversitetet, Institutionen för matematikdidaktik (MD), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-38005.
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I denna studie undersöks vad som sker i intensivundervisning där en SUM-elev, elev med särskilda utbildningsbehov i matematik, erbjuds multisensorisk undervisning. Vilken utveckling som sker vad gäller elevens taluppfattning, samt olika uttryck för lärande i undervisningsprocessen är också något som studeras. Studien har en kvalitativ ansats och har genomförts som en fallstudie med en SUM-elev i årskurs ett. Fallstudien innehåller en intervention med matematiktester vilka genomförts före och efter en intensivundervisning i grundläggande taluppfattning. Deltagande observationer av undervisningssekvensen har genomförts, vilka också har filmats. Till analysen används Bruners teori om representationer tillsammans med Vygotskijs teori om lärande ur ett sociokulturellt perspektiv. Representationerna i Bruners teori beskrivs som den enaktiva som är handlingsbaserad, den ikoniska som är bildbaserad och den symboliska som är språkbaserad. Resultatet visar i detta fall att en intensivundervisning med multisensorisk approach påverkar elevens taluppfattning positivt och elevens lösningsfrekvens mellan för- och eftertest tredubblats. En utveckling av bland annat matematiska förmågor var synlig. Eleven utvecklade lärande i de olika representationerna där inledningsvis den enaktiva representationen användes och succesivt även den ikoniska- och symboliska representationen. Resultatet visar en positiv påverkan på elevens självförtroende i matematiska situationer, främst gällande symbolhantering.<br>This study examines what happens in the situation of intense, multi-sensory instruction for a SEN-student in the subject of mathematics, a student with special education needs in mathematics. What kind of development is happening in terms of the student's number sense, as well as various forms of learning in the teaching process is also something that is studied. The study has a qualitative approach and was implemented as a case study with a SEN-student in the subject of mathematics in year one. The case study includes an intervention with math tests which were taken before and after an intensive teaching of basic number sense. Participant observation of the teaching sequence has been implemented, which also have been filmed. For the analysis Bruner's theory of representations along with Vygotsky's theory of learning from a sociocultural perspective is used. The representations in Bruner's theory is described as the enactive that is action-based, the iconic that is image based and the symbolic which is language-based. The result in this case shows that an intensive instruction with a multi-sensory approach affects the student's number sense in a positive way. The pupils solution frequency between pre- and posttest tripled. The Pupil developed learning in the different representations where initially the enactive representation was used and gradually even the iconic- and symbolic representation. A development including mathematical competences were visible. The results show a positive impact on the pupil self-confidence in mathematical situations, primarily in situations for symbol processing.
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Eriksson, Anna, and Caroline Nilsson. "Att skapa en multisensorisk sinnesupplevelse : En marknadsföringsstrategi för detaljhandelsföretag." Thesis, University of Kalmar, Baltic Business School, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hik:diva-2462.
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<p>Uppsatsens syfte är att analysera och diskutera varför och på vilka sätt ett detaljhandelsföretag bör erbjuda kunden en multisensorisk varumärkesupplevelse. Uppsatsen kommer att ge företag ökad förståelse för Sinnesmarknadsföring och vad det får för konsekvenser vid utformandet av servicelandskapet.</p><p>Vi har använt oss av både en kvantitativ och en kvalitativ metod. Den kvantitativa metoden innebar ett experiment där vi undersökte doft- och ljudets påverkan på kundbeteendet. Experimentet utfördes på en utvald yta på EM Kalmar Severins i samband med den specifika produktgruppen soffa. Den kvalitativa undersökningen genomfördes med observationer, 15 kundintervjuer samt en intervju med varuhuschefen.</p><br><p>This paper aims to analyze and discuss why and how a retail company should create a multisensory brand experience. The paper will give a greater understanding regarding sensory marketing and which the consequences may be considering the design of the servicescape.</p><p>We have used both a quantitative and a qualitative approach. The quantitative research consists of an examination of the olfactory and the auditory influence on customer behavior. The experiment was performed in a selected area at EM Kalmar Severins focusing on the specific product group sofas. The qualitative survey consists of observations, 15 customer interviews and an interview with the store manager.</p>
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Hedberg, Matilda, and Ellinor Tagesson. "En bokhandel i förändring : En studie av utvecklingen inom bokbranschen med fokus på sensoriska stimuli och stödtjänster." Thesis, Linnéuniversitetet, Institutionen för marknadsföring (MF), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-54567.
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Frågeställning: Vilken utveckling av Akademibokhandelns fysiska butiker kan förstärka konkurrenskraften? Syfte: Uppsatsens syfte är att utreda och analysera vilka olika konkurrensmedel som kan ha relevans för Akademibokhandelns framtid, liksom möjlig utveckling av stödtjänster och potentiell breddning av verksamheten. Vidare är avsikten att klargöra hur tillämpning av sensoriska stimuli i Akademibokhandelns servicelandskap kan få betydelse för kunderna samt hur design och uppbyggnad av servicelandskapen kan stärka verksamheten. Metod: En kvalitativ forskningsmetod har använts med inslag av både induktion och deduktion. Datainsamlingen har skett via djupintervjuer och en fokusgrupp. Vidare har även resultatet genomgått en kvalitativ dataanalys. Resultat och slutsatser: Resultatet visar på att implementeringen av sensoriska stimulin i Akademibokhandelns servicelandskap på många sätt är till fördel för företaget, eftersom de generellt har en positiv påverkan på kundernas tjänsteupplevelse. Vidare konstaterades även att en utveckling av företagets stödtjänster ytterligare skulle stärka deras konkurrenskraft. Teoretiskt och praktiskt bidrag: Det teoretiska bidrag som arbetet genererat är hur ett servicelandskap med fokus på implementering av sinnesmarknadsföring kan gestaltas samt hur en integration mellan olika försäljningskanaler kan ta vid. Vi har även presenterat ett antal praktiska bidrag som är relevanta för Akademibokhandelns framtida utveckling. Nyckelord: Servicelandskap, Detaljhandel, Stödtjänster, Bokhandel, Utveckling, Multisensorik, Sinnesmarknadsföring, Breddning av verksamhet<br>Research question: Which development of Akademibokhandeln physical stores can enhance competitiveness? Purpose: This thesis aims to investigate and analyse the various means of competition that may have relevance to Akademibokhandelns future, as well as the possible development of support services and the potential expansion of the business. The purpose is to clarify if the application of sensory stimuli in Akademibokhandelns servicescape may have implications for customers as well as how the design and construction of the servicescapes can strengthen the business. Method: The thesis has elements of both induction and deduction, and a qualitative research method has been used. Data has been collected through in-depth interviews and a focus group. The data has gone through a qualitative data analysis. Results and conclusions: The result shows an implementation of sensory stimuli in Akademibokhandeln servicescape in many ways will benefit the company as they generally have a positive impact on the customer service experience. Additionally it was found that a development of the company´s support services would further enhance their competitiveness Theoretical and practical contributions: The theoretical contribution this report has generated is based on how a servicescape with a focus on an implementation of sensory marketing can be portrayed and how integration between different sales channels can be beneficial to the company. We have further on presented a number of practical contributions which we view as relevant to Akademibokhandelns Future Development. Key words: Servicescape, Retail, Support Services, Bookstore, Development, Multi-sensory, Sensory Marketing, Expansion of activities
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Johansson, Fanny, and Damir Skoko. "De fem sinnena som marknadsföringsverktyg." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-31477.
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Vi har i vår studie valt att undersöka hur modebutiker kan påverka kundernas köpbeteende för att öka försäljningen med hjälp av sinnesmarknadsföring. Syftet med vår studie är att ta reda på hur sinnesmarknadsföring används och kan användas av butiker för att öka försäljningen. I vår slutsatts fann vi att sinnesmarknadsföring har en betydande roll för kundernas köpbeteende och försäljningen i butiken.<br>We have in our study chose to examine how fashion stores can influence customer buying behavior to increase sales through sensory marketing. The aim of our study is to find out how sensory marketing is used and can be used by stores to increase sales. In our final set, we found that sensory marketing has a significant role in customer behavior and sales in the store.
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Hospedales, Timothy. "Bayesian multisensory perception." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/2156.
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A key goal for humans and artificial intelligence systems is to develop an accurate and unified picture of the outside world based on the data from any sense(s) that may be available. The availability of multiple senses presents the perceptual system with new opportunities to fulfil this goal, but exploiting these opportunities first requires the solution of two related tasks. The first is how to make the best use of any redundant information from the sensors to produce the most accurate percept of the state of the world. The second is how to interpret the relationship between observations in each modality; for example, the correspondence problem of whether or not they originate from the same source. This thesis investigates these questions using ideal Bayesian observers as the underlying theoretical approach. In particular, the latter correspondence task is treated as a problem of Bayesian model selection or structure inference in Bayesian networks. This approach provides a unified and principled way of representing and understanding the perceptual problems faced by humans and machines and their commonality. In the domain of machine intelligence, we exploit the developed theory for practical benefit, developing a model to represent audio-visual correlations. Unsupervised learning in this model provides automatic calibration and user appearance learning, without human intervention. Inference in the model involves explicit reasoning about the association between latent sources and observations. This provides audio-visual tracking through occlusion with improved accuracy compared to standard techniques. It also provides detection, verification and speech segmentation, ultimately allowing the machine to understand ``who said what, where?'' in multi-party conversations. In the domain of human neuroscience, we show how a variety of recent results in multimodal perception can be understood as the consequence of probabilistic reasoning about the causal structure of multimodal observations. We show this for a localisation task in audio-visual psychophysics, which is very similar to the task solved by our machine learning system. We also use the same theory to understand results from experiments in the completely different paradigm of oddity detection using visual and haptic modalities. These results begin to suggest that the human perceptual system performs -- or at least approximates -- sophisticated probabilistic reasoning about the causal structure of observations under the hood.
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Filippidis, Arthur. "Multisensor data fusion." Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09ENS/09ensf482.pdf.
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施能強 and Nang-keung Sze. "Image reconstruction with multisensors." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31226711.
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Österbauer, Robert Alexander. "Multisensory integration of olfaction." Thesis, University of Oxford, 2007. http://ora.ox.ac.uk/objects/uuid:34764b4d-7d12-461b-8a88-c3aa3418d228.
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The primary aim of this thesis was to investigate, using functional magnetic resonance imaging (fMRI), the neurophysiological basis of multisensory integration involving smell and vision. To achieve this goal, several technical challenges had to be addressed: the attainment of sufficiently high quality fMRI images in olfactory brain regions within the orbitofrontal cortex (OFC), the construction of a stimulus delivery system adequate for rapid and controlled odour delivery in the MRI environment, and optimal strategies for delivering and perceiving liquid flavour stimuli in the scanner. In two initial fMRI experiments, strategies including sensitivity encoding and passive shimming to improve OFC image quality were explored. The results demonstrated that both methods can improve signal detection in OFC, a brain area particularly sensitive to susceptibility artefacts. In a further fMRI study, the effectiveness of two methods of delivering odorants dissolved in liquids was compared. In this study, the same set of participants was required to either swallow the liquid immediately after delivery or hold it in their mouths for a brief period of time. The results indicated that while both methods allowed detection of activity in primary olfactory and gustatory cortices, activation of the OFC was not observed when participants swallowed the liquids immediately. This was presumed to be due to the increased head motion associated with swallowing. Finally, the mechanisms underlying visual-olfactory integration were investigated using a combination of behavioural and imaging methods. An initial behavioural study revealed strong colour-odour associations for certain smells associated with fruits (e.g. lemon - yellow). In a subsequent fMRI study, volunteers were presented with a selection of the most colour-associated odours from the prior behavioural study either in isolation or in the presence of congruent and incongruent colours. Analysis of the fMRI data revealed that a highly left lateralised network of brain areas comprising of the OFC and insular showed increasingly stronger responses to odour-colour combinations of higher congruency. In a follow-up fMRI study, this same network was also found to be responsible for integrating odours, not only with colours, but also with their corresponding visual images (objects). In sum, the series of fMRI studies undertaken in this thesis argue for a fundamental role of the OFC in the integration of olfactory-visual inputs in the human brain.
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Sze, Nang-keung. "Image reconstruction with multisensors /." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23621552.
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Kuang, Xutao. "Adaptation in multisensory neurons." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/65419/.
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The most studied region in the mammalian brain for multisensory integration is the deep superior colliculus (DSC). Neurophysiological experiments have revealed many response properties of DSC neurons, such as cross-modal enhancement (CME) and sub-additive/additive/super-additive op- erational modes. CME occurs when the response of a multisensory neuron to stimulation in one sensory modality is enhanced, often non-linearly, by temporally and spatially coincident stimulation of a second sensory modality. Response enhancement is frequently larger for weaker input stimuli than for stronger stimuli, a phenomenon known as inverse e®ectiveness. It is believed that a non-linear, saturating response function may underlie CME associated with inverse effectiveness. We explore this idea in more detail, showing that apart from CME, many other response properties of DSC neurons, including the different dynamic ranges of responses to unimodal and multimodal stimuli and the diverse operational modes, also emerge as a direct consequence of a saturating response function such as a sigmoidal function. We then consider the question of how the exact form of a candidate, saturating sigmoidal function could be determined in a DSC neuron. In particular, we suggest that adaptation may determine its exact form. Adaptation to input statistics is a ubiquitous property of sensory neurons. Defining the operating point as the output probability density function, we argue that a neuron maintains an invariant operating point by adapting to the lowest-order moments of the input probability distribution. Based on this notion, we propose a novel adaptation rule that permits unisensory neurons to adapt to the lowest-order statistics of their inputs, and then extend this rule to allow adaptation in multisensory neurons, of which DSC neurons are an example. Adaptation in DSC neurons is expected to change the responses of a neuron to a fixed, probe or test stimulus. Such a neuron would therefore exhibit different CME when presented with the same stimulus drawn from different statistical ensembles. We demonstrate that, for suitable selections of test stimuli, adaptation to an increase in the mean, the variance or the correlation coefficient induce consistent changes in CME. By virtue of the robustness of the results, the underlying adaptation notion can be tested in neurophysiological experiments. Finally, it is known that descending cortical projections from the anterior ectosylvian sulcus and the rostral aspect of the lateral suprasylvian sulcus are indispensable for DSC neurons to exhibit CME. The structure of our proposed adaptation rule for multisensory neurons therefore permits us to speculate that the descending cortical inputs to multisensory DSC neurons facilitate the computation of the correlation coefficient between different sensory channels' activities.
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Hodge, James Nathan. "Multisensory worship in traditional setting." Fort Worth, Tex. : [Texas Christian University], 2007. http://etd.tcu.edu/etdfiles/available/etd-01092008-120546/unrestricted/Hodge.pdf.
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Thesis (D.Min.)--Brite Divinity School, Texas Christian University, 2007.<br>Title from dissertation title page (viewed Jan. 31, 2008). Includes abstract. "A thesis submitted to the Faculty of Brite Divinity School in partial fulfillment of the requirements for the degree of Doctor of Ministry." Includes bibliographical references.
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Booth, Stuart. "Multisensory theory for interface design." Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269283.
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Michail, Georgios [Verfasser]. "Functionally relevant low frequency oscillations in multisensory illusion and multisensory response speed facilitation / Georgios Michail." Berlin : Freie Universität Berlin, 2021. http://d-nb.info/1241541795/34.
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Purohit, Madhavi. "Multisensor integration for a robot." Ohio : Ohio University, 1989. http://www.ohiolink.edu/etd/view.cgi?ohiou1182456473.
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Petrovic, Vladimir. "Multisensor pixel-level image fusion." Thesis, University of Manchester, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.715412.
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Ikumi, Montserrat Nara 1986. "The effect of cognitive factors on cross-modal synchrony perception." Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/398008.
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Perception in our everyday life takes place in multisensory environments, and hence involves the processing of a multitude of signals captured by various sensory modalities. Given the different nature of the signals, understanding how all the information is combined in the brain to form an integrated percept is not straightforward. One of the paramount questions is how the considerable timing differences between sensory information processing are managed. For example, in the last years there has been a tremendous surge in interest to understand how the perceptual system elicits the subjective impression of synchrony for stimuli coming from different sensory modalities. Yet, most evidence so far concerns stimulus-related properties in simple contexts. The present dissertation addresses the influence of cognitive factors and participants’ inner state (such as attention, action task demands, and ongoing brain rhythms) on synchrony perception between audio-visual events. In the first two studies of the dissertation, we have addressed the role of selective attention and action during cross-modal temporal recalibration. The results of these studies provide evidence that subjective simultaneity can be strongly modulated as a function of the focus of the observer’s endogenous attention, in otherwise identical stimulation conditions. In the third study, we have recorded electroencephalographic activity while participants performed an audio-visual simultaneity judgment task for stimuli presented at different asynchronies. Our results show that the phase of low frequency neural oscillations, reflecting brain states prior to the occurrence of an audio-visual event, can predict perceptual variability in synchrony judgments. Overall, our results shed new light on how cognitive factors can modulate multisensory perception.<br>La percepció del nostre entorn és multisensorial, és a dir, involucra el processament de senyals a través de diverses modalitats sensorials. Combinar aquesta informació en el cervell per tal de formar una percepció coherent i integrada és un procés complex, degut a la diferent naturalesa de les senyals. A més, això farà que el cervell hagi de resoldre diferències temporals durant el processament de la informació. En els últims anys, ha sorgit un profund interès per entendre com el sistema perceptiu genera la impressió de sincronia d’estímuls provinents de diferents modalitats sensorials. La major part dels estudis han examinat propietats de la percepció de sincronia relacionades directament amb els estímuls físics, en contexts molt simplificats. En aquesta tesi investigo la influència de factors cognitius i de l’estat intern de l’individu (com per exemple l’atenció, demandes en tasques motores, i els ritmes interns cerebrals) en la percepció de sincronia entre estímuls audiovisuals. En els primers dos estudis de la tesi, hem examinat la funció de l’atenció i les accions durant la recalibració temporal d’estímuls audiovisuals. Els resultats dels estudis mostren com la sincronia subjectiva pot ser fortament modulada en funció d’on es dirigeixi el focus atencional del participant, en condicions on l’estimulació física és idèntica. En el tercer estudi, hem enregistrat l’activitat electroencefalogràfica dels participants, mentres realitzaven una tasca de simultaneïtat. Durant aquesta tasca presentàvem diferentes asincronies entre estímuls audiovisuals per tal d’estudiar la percepció de sincronia (vs. asincronia). Els resultats indiquen que la fase de les oscil•lacions neuronals, que reflecteixen estats cerebrals abans de la presència d’un estímul audiovisual, poden predir la resposta en quan a percepció de sincronia. En resum, els nostres resultats aporten coneixement sobre com alguns factors cognitius poden modular la percepció multisensorial.
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Steven, M. S. "Neuroimaging of multisensory processing and synaesthesia." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410663.
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Gardiner, Jayne M. "Multisensory Integration in Shark Feeding Behavior." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4046.
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Multimodal sensory input directs simple and complex behaviors in animals. Most research to date has been limited to studies of individual senses rather than multiple senses working together, leading to important advances in our comprehension of the sensory systems in isolation, but not their complementary and alternative roles in difficult behavioral tasks, such as feeding. In the marine environment, a prey item might emit an odor, create a hydrodynamic disturbance, such as from gill movements or swimming, be visible to the predator, produce a sound, and/or produce a weak electrical field. Therefore, the goal of this study was to investigate the integration of olfaction, mechanoreception by the lateral line system, vision, and electroreception in a marine animal. Sharks were chosen as a model organism in which to investigate multisensory integration because of their sensitivity and acuity, the presence of the same suite of sensory modalities in all species, the availability of experimental animals from different species, habitats and ecologies, and the rich literature on sharks' prey capture behavior. Two approaches were used: controlled artificial stimuli, delivered to the animals, were used to determine the spatial and concentration characteristics of odor encounters that guide the initial orientation to an odor plume in the far field in a model elasmobranch, the smooth dogfish, Mustelus canis; and sensory deprivation was used to restrict the availability of natural cues emanating from live prey items in order to elucidate the complementary and alternating roles of the senses in detecting, tracking, orienting to, striking at, and ultimately capturing prey. In the latter experiments, three species of sharks from different ecological niches were investigated: benthic, suction-feeding nurse sharks (Ginglymostoma cirratum) that hunt nocturnally for fish; ram-biting bonnetheads (Sphyrna tiburo) that scoop crustaceans off the bottom of seagrass beds; and ram-feeding blacktip sharks (Carcharhinus limbatus) that rapidly chase down midwater teleost prey. In orienting to odor patches, bilateral time differences between the nares are more important than concentration differences, such that animals turn toward the side stimulated first, even with delayed pulses of higher concentration. This response would steer the shark into each oncoming odor patch, helping the animal maintain contact with an odor plume. Sensory deprivation experiments revealed similarities and differences among species in terms of which senses they choose to focus on for particular behaviors, likely as a result of differences in the environments that they hunt in, type of prey consumed, and foraging strategies used, as well as anatomical differences in the central nervous system and the sensory organs. In most cases, multiple senses can be used for the same behavioral task. Thus, sharks are capable of successfully capturing prey, even when the optimal sensory cues are unavailable, by switching to alternative sensory modalities, which indicates that feeding behavior is plastic. Nurse sharks rely primarily on olfaction for detection. Olfaction in combination with vision, the lateral line, or touch is required for tracking. Nurse sharks orient to prey using the lateral line, vision, or electroreception, but will not ingest food if olfaction is blocked. Capture is mediated by the electrosensory system or tactile cues. Bonnetheads normally detect prey using olfaction, rely on olfactory-based tracking until they are close to the prey, then vision to line up a strike, and finally electroreception to time the jaw movements for capture. They can detect, orient, and strike visually in the absence of olfactory cues. Blacktip sharks also detect prey using olfaction or vision. Olfaction is used in combination with vision or the lateral line system for tracking. Long-distance orientation and striking is visually mediated, but strike precision relies on lateral line cues and an increase in misses occurs when this system is blocked. In the absence of vision, short-range orientation and striking can occur using lateral line cues. Capture is mediated by electroreception or tactile cues. Collectively, these results were used to develop species-specific sensory hierarchies for shark feeding behavior in a captive environment, the first such hierarchies to cover a complete behavioral sequence in a vertebrate.
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Thesen, Thomas. "Multisensory processing in the human brain." Thesis, University of Oxford, 2005. http://ora.ox.ac.uk/objects/uuid:e644c5d7-1cf6-42d5-b073-86f1f70a48b6.
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Perception has traditionally been studied as a modular function where different sensory systems operate as separate and independent modules. However, multisensory integration is essential for the perception of a coherent and unified representation of the external world that we experience phenomenologically. Mounting evidence suggests that the senses do not operate in isolation but that the brain processes and integrates information across modalities. A standing debate is at what level in the processing hierarchy the sensory streams converge, for example, if multisensory speech information converges first in higher-order polysensory areas such as STS and is then fed back to sensory areas, or if information is already integrated in primary and secondary sensory areas at the early stages of sensory processing. The studies in this thesis aim to investigate this question by focussing on the spatio-temporal aspects of multisensory processing, as well as investigating phonetic and non-phonetic integration in the human brain during auditory-visual speech perception.
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Thurrell, Adrian Edward Ivan. "Multisensory interactions concerning human self-motion." Thesis, University College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411397.
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Quigley, Geoffrey Richard. "Integrated optical multisensors for water quality." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340311.
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Gama, Nuno. "Mechanisms of multisensory integration and attention." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/40400/.
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Spatial attention is an essential mechanism that helps us perceive our surroundings by bringing into consciousness environmental occurrences or objects that may be of importance. Studies of spatial attention have classically recorded behavioural responses to targets presented in a region of space where attention had previously been allocated to. Such investigations show a behavioural facilitation at the same location due to cueing, but less in known about the effects of shifts of attention when the cued location is not the location of interest. This thesis presents seven experiments aimed at investigating this by implementing and revising the attentional repulsion effect (ARE). The ARE is a perceptual localisation error when attention is diverted from the region of interest and it has been extensively studied in the visual domain, however, the rising number of ARE studies has created numerous research methodologies used to evoke the effect, which may have led to isolated reports. This thesis attempts to combine past methodologies with a new approach to quantify the effect, and will address some methodological differences evident in the literature, in order to optimise the stimulus paradigms and maximise the effect. The results show that a robust ARE can be elicited in the visual modality, but the same is not observed in the auditory modality. Furthermore, when using cues that are of different modality than the targets, the ARE is only observed in the visual target modality. Using visual cues and auditory targets will produce an attraction effect, in line with the ventriloquism theory. However, the implementation of interstimuli intervals up to 1.5 seconds would be enough to disrupt the ventriloquism illusion, but it did not alter the resulted attraction. Lastly, one question regarding the role of attention in sensory adaptation was addressed. I hypothesise that sensory adaptation could be further a contributor to the ARE given that most psychophysics paradigms of the ARE repeat the same stimuli thousands of times, uninterruptedly. The results are inconclusive mainly due to experimental design. All results are discussed in relation with theories of spatial and multimodal attention.
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Haggit, Jordan. "Cued Visual Search and Multisensory Enhancement." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1421180413.
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Holgersson, Sara. "Fonemisk och multisensorisk läsinlärningsmetodik : En interventionsstudie i åk 1." Thesis, Umeå universitet, Institutionen för språkstudier, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-115810.
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This study analyses the effects of an intervention using "FonoMix Munmetoden" for phonemic and multisensory training. Its focus was studying the effects on phonological awareness, letter/sound connection, and decoding. Eight children with limited phonological awareness, in first grade, were selected on the basis of screening test results and were divided into two groups. The intervention group received phonemic and multisensory training; five days a week, 30 minutes each time, for six weeks. The control group only received their usual classroom-based training. Both groups were tested before and after the intervention to determine the results. The results show that the intervention group increased their phonological awareness, especially their phonemic awareness, compared to the control group. Both groups increased their letter/sound connection. Neither group increased their non-word reading, but the intervention group performed better at reading words than the control group did. The conclusion is that phonemic and multisensory training with "FonoMix Munmetoden" increases phonological awareness and decoding ability.
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Pradhan, Pushkar S. "Multiresolution based, multisensor, multispectral image fusion." Diss., Mississippi State : Mississippi State University, 2005. http://library.msstate.edu/etd/show.asp?etd=etd-07082005-140541.
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Jeong, Soonho Tugnait Jitendra K. "Topics in multisensor maneuvering target tracking." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/doctoral/JEONG_SOONHO_43.pdf.
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Petersson, Ann-Charlotte, and Emma Henriksson. "Multisensoriska lärstilarOm lärandemiljöns betydelse för elevers inlärning." Thesis, Kristianstad University College, School of Teacher Education, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-4862.
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<p>Abstract</p><p>Syftet med denna uppsats är att med hjälp av litteratur, observationer samt semistrukurerade intervjuer med tre olika lärare se hur en god lärandemiljö kan utformas med stöd av multisensoriska lärstilar. Undersökningen visar också hur elever får sina multisensoriska lärstilar tillgodosedda i undervisningen.</p><p>Resultaten av de empiriska undersökningarna visar även att om elevers olika lärstilar ska tillgodoses i undervisningen måste lärarna ha medvetenhet om hur man lägger upp lektioner efter elevers olika förutsättningar. Men det räcker inte bara med att man som lärare har denna medvetenhet utan man måste också kunna tillämpa den i verkligheten. </p><p>En viktig aspekt som framkommer av litteraturen är att ju fler sätt vi använder för att lära ut en viss kunskap, desto större chans har vi att nå alla elever. De tre lärarnas syn på lärstilar varierar i studien, vilket i sin tur resulterar i olika sätt att nå alla elever i dessa klasser.</p>
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Hartcher-O'Brien, Jessica. "Multisensory integration of redundant and complementary cues." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:592fa079-9fb7-469b-bffd-b84173a1bed5.
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During multisensory integration, information from distinct sensory systems that refers to the same physical event is combined. For example, the sound and image that an individual generates as s/he interacts with the world, will provide the nervous system with multiple cues which can be integrated to estimate the individual’s position in the environment. However, the information that is perceived through different sensory pathways/systems can be qualitatively different. The information can be redundant and describe the same property of an event in a common reference frame (i.e., the image and sound referring to the individual’s location), or it can be complementary. Combining complementary information can be advantageous in that it extends the range and richness of the information available to the nervous system, but can also be superfluous and unnecessary to the task at hand – i.e. olfactory cues about the individuals perfume can increase the richness of the representation but not necessarily aid in localisation. Over the last century or so, a large body of research has focused on different aspects of multisensory interactions at both the behavioural and neural levels. It is currently unclear whether the mechanisms underlying multisensory interactions for both type of cue are similar or not. Moreover, the evidence for differences in behavioural outcome, dependent on the nature of the cue, is growing. Such cue property effects possibly reflect a processing heuristic for more efficient parsing of the vast amount of sensory information available to the nervous system at any one time. The present thesis assesses the effects of cue properties (i.e., redundant or complementary) on multisensory processing and reports a series of experiments demonstrating that the nature of the cue, defined by the task of the observer, influences whether the cues compete for representation as a result of interacting, or whether instead multisensory information produces an optimal increase in reliability of the event estimate. Moreover, a bridging series of experiments demonstrate the key role of redundancy in inferring that two signals have a common physical cause and should be integrated, despite conflict in the cues. The experiments provide insights into the different strategies adopted by the nervous system and some tentative evidence for possible, distinct underlying mechanisms.
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Heron, James, N. W. Roach, David J. Whitaker, and James Vincent Michael Hanson. "Attention regulates the plasticity of multisensory timing." Wiley, 2010. http://hdl.handle.net/10454/4548.
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Evidence suggests that human time perception is likely to reflect an ensemble of recent temporal experience. For example, prolonged exposure to consistent temporal patterns can adaptively realign the perception of event order, both within and between sensory modalities (e.g. Fujisaki et al., 2004 Nat. Neurosci., 7, 773-778). In addition, the observation that 'a watched pot never boils' serves to illustrate the fact that dynamic shifts in our attentional state can also produce marked distortions in our temporal estimates. In the current study we provide evidence for a hitherto unknown link between adaptation, temporal perception and our attentional state. We show that our ability to use recent sensory history as a perceptual baseline for ongoing temporal judgments is subject to striking top-down modulation via shifts in the observer's selective attention. Specifically, attending to the temporal structure of asynchronous auditory and visual adapting stimuli generates a substantial increase in the temporal recalibration induced by these stimuli. We propose a conceptual framework accounting for our findings whereby attention modulates the perceived salience of temporal patterns. This heightened salience allows the formation of audiovisual perceptual 'objects', defined solely by their temporal structure. Repeated exposure to these objects induces high-level pattern adaptation effects, akin to those found in visual and auditory domains (e.g. Leopold & Bondar (2005) Fitting the Mind to the World: Adaptation and Aftereffects in High-Level Vision. Oxford University Press, Oxford, 189-211; Schweinberger et al. (2008) Curr. Biol., 18, 684-688).<br>Wellcome Trust, College of Optometrists
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Chinowsky, Timothy Mark. "Optical multisensors based on surface plasmon resonance /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/5857.
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Wozny, David R. "Statistical inference in multisensory perception and learning." Diss., Restricted to subscribing institutions, 2009. http://proquest.umi.com/pqdweb?did=1970597951&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
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Hammond-Kenny, Amy J. "Multisensory processing in the ferret auditory cortex." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:4e9a731e-4001-4e88-8ffb-7c0c7317050a.
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Our perception of events depends on the integration of information derived from different sensory modalities. Functional imaging and electrophysiological studies have shown that multisensory interactions occur even at the level of primary sensory cortices; however their functional significance remains elusive. Therefore, to explore the relationship between multisensory interactions in early auditory cortical processing areas and behaviour, we recorded activity from the auditory cortex during the performance of different auditory-visual tasks. Ferrets were trained by positive operant-conditioning to localise auditory, visual and spatiotemporally coincident auditory-visual stimuli throughout the frontal hemifield and to categorise temporally coincident auditory-visual stimuli according to their spatial congruency. Our results show that the integration of auditory and visual cues results in significantly more accurate and faster localisation responses and that spatial information can be used to merge different sensory stimuli and resolve conflicts between them. This confirmed the ferret as a good model to explore multisensory spatial processing. In total, 509 single units were identified in the auditory cortex of five animals, of which 16% were influenced by visual stimulation. Our results show that modulation of activity in response to changes in auditory stimulus characteristics directly relates to task performance. For example, animals were more likely to correctly localise stimuli when activity increased in the contralateral cortex and decreased in the ipsilateral cortex. The effects of visual co-stimulation were subtle, mainly suppressive and not clearly correlated with performance on either task. A population decoding analysis showed that auditory cortical activity is, however, informative about the task context, since we were able to decode task type from trials that were otherwise equivalent in terms of the stimuli presented. Our results support the existence of multisensory interactions in early auditory processing areas, but suggest that these areas function primarily as auditory feature detectors that operate in a task-dependent manner.
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Blomberg, Rina. "Evoked Multisensory Cortical Representations During Unisensory Stimulation." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-94341.
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The primary aim of this study was to establish whether redintegrative effects can be revealed under conditions with complex sensory stimulation. Specifically, would the cortical activity involved in the single-trial, passive encoding of a movie, be reactivated when subsequently exposed to a unisensory component of that movie, e.g. an audio- or visual-only segment? High-density electrical neuroimaging analysis in the frequency domain was used to assist this aim. The statistical comparisons revealed a greater number of oscillating neuronal regions across all frequency bands in participants who received audiovisual stimulation prior to unisensory exposure (compared to participants who experienced the same unisensory stimulus without prior audiovisual stimulation). This difference between groups was significant in the alpha2 (right frontal lobe) and gamma (right frontal, sub-lobar and temporal lobes) frequencies during audio-only stimulation. This enhanced cortical activity during unisensory stimulation suggests that participants were retrieving associated memory traces from their prior multisensory experience, although specific redintegrative effects could not be confirmed.
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Klaus, Ferdinand. "Einführung in Techniken und Methoden der Multisensor-Datenfusion." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971151989.
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Robl, Christian. "Aufgabenorientierte Kopplung von Sensoren mit unterschiedlichen Abtasteigenschaften." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=959771166.
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Dittmann, Brigitte. "Entwicklung und Realisierung eines Sensorsystems auf massenspektrometrischer Basis." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=96214715X.
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Rühl, Thorsten. "Studien zur verbesserten Ausnutzung des Informationsgehaltes von Multisensorsystemen." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963710591.
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Ringdahl, Monika. "Lärstilar : Hur ska vi i skolan lära ut så att eleverna kan lära in ?" Thesis, Karlstad University, Faculty of Arts and Education, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-284.
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<p>Syftet med detta arbete var att ta reda på hur medvetna lärare på lågstadiet är av lärstilar och hur de praktiserar detta i sin undervisning. Jag har intervjuat sju lärare på lågstadiet för att ta reda på detta. Lärarna i min undersökning är relativt medvetna om lärstilar. Denna medvetenhet gör att det undervisar både genom att berätta (auditivt), visa (visuellt) och att de låter eleverna göra saker (kinestetiskt/taktilt) för att förstå. Detta gör att de allra flesta elever kan tillgodogöra sig undervisningen. Trots detta upplevde lärarna att de elever som lär in genom att ”göra” saker ofta kom i kläm i skolan eftersom deras inlärningsstil kräver mer arbete av läraren.</p><br><p>The purpose of this study has been to find out how conscious primary school teachers are of different learning styles and how they use them in practice. I have interviewed seven primary teachers for this study. The teachers were relatively conscious of different learning styles. This consciousness means that the education is both auditive, visual and that they let the pupils learn by doing to understand. This cause that the most pupils can profit from the training. Despite this they witnessed how pupils who “learnt by doing “lost out in the classroom because their needs demanded more effort from teachers.</p>
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Rødningsby, Anders. "Multitarget Multisensor Trackingin the Presence of Wakes." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11913.
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TARGET tracking is an essential requirement for surveillance and control systems to interpret the environment. This environment may contain multiple targets, and the environmental information may be obtained by multiple sensors in a multitarget multisensor tracking system. In this thesis we focus on targets which, in addition to reflecting signals themselves, also have a trailing path behind them, called a wake. This wake causes additional measurements to those originating from the target. When the measurements are processed, the estimated track can be misled and sometimes lose the real target because of the wake. This problem becomes even more severe in multitarget environments where targets are operating close to each other in the presence of wakes. In this thesis a probabilistic model is developed which reflects the probability that a false measurement originates from the wake behind a target. This wake model is integrated in the probabilistic data association filter (PDAF) to improve the track continuity for tracking single targets. The modified PDAF is further extended to handle multiple targets in the presence of wakes by using a probabilistic wake model for each of the targets in the multitarget environment that has a wake behind it. These single wake models are combined to form a joint wake model which augments the joint probabilistic data association filter (JPDAF) for both coupled and decoupled filtering. The wake-originated measurements may also cause confusion in the track initiation. To prevent this problem, a clustering method is proposed based on morphological operators which allows tracks to be initialized based on two-point differencing of the cluster centroids from succeeding scans. The modified PDAF is tested on data of a real scuba diver with an open breathing system. In this case the air bubbles produced by the diver form a wake which extends far behind the diver. The experiment showed that the above modifications of the PDAF improved the track continuity significantly. Finally, a relatively extensive simulation, based on real scuba diver data, is presented. Four different multitarget multisensor tracking scenarios are simulated, considering two targets with wakes that are: 1. Crossing each other. 2. Moving in parallel to each other. 3. One following after another. 4. Meeting and then passing each other. The results of these simulation scenarios show that the presented modifications improve the tracking performance, and the probability of lost tracks is significantly reduced. The targets are observed by two sensors, and it is shown that tracks estimated in a centralized fusion configuration are better than the local tracks estimated using data from individual sensors only. It is also shown that applying the wake model to targets that do not generate a wake, yields almost no deterioration of the tracking performance.
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Berg, Timothy Martin. "Model distribution in decentralized multisensor data fusion." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317852.
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Hilmersson, Anette. "Multisensor Stress Monitoring For Non-Stationary Subjects." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-28340.
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Monitoring stress in real-time, in a non-laboratory environment can be benecial in several applications. One of these, which have been the motivation for this thesis, is to to perform this measurement during Attention decit hyperactivity disorder (ADHD) diagnosis. Monitoring several physiological responses to internal or external stimuli in a single soft-real-time system is nota solution widely used in an application like this. The thesis starts by studying several stress related responses in detail. Sensors for all of the responses are not implemented nor is it possible toimplement in to the desired system. After the study is was decided to implement two measurement modules. The first a Photo-plethysmogrophy (PPG) measurement module to measure heart rate and also estimate breathing. This module is prepared for estimating arterial blood oxygen levels but the calculation or verification have not been done. The second is Skin Conductance (SC) measurement module and in to both ofthese add a temperature sensor to measure the temperature of the skin. Time constraints limit the SC module to only be presented in theory. The PPG module on the other hand have been realisedin a prototype. This prototype performs the measurement in transmissive mode on the left earlobe, which leaves the hands free and it does not affect the hearing on that ear. The prototype giveout acceptable signal quality when good contact with the measurement site is achieved. The signalinterpretation, such as performing the signal analysis to count the beats per minute, is outside thescope of this thesis and will therefore not be presented but the signals can be seen in figures.<br>Att mäta stress i realtid i verkliga situationer kan vara fördelaktigt för flera applikationer. Det som har legat som grund för denna uppsats är att kunna mäta stress under ADHD diagnostisering. Genom att kombinera de vanliga testerna med stressnivåer hos patienten hoppas man kunna utveckla nya metoder för diagnostisering. Att mäta fera parametrar samtidigt i realtid är inte något ofta utförs idag. För att komma igång har fera kroppsliga funktioner som påverkas på olika sätt av stress studerats. Alla dessa funktioner kan inte inkluderas i det system som önskas konstrueras antingen på grund av systemets karaktär eller på grund tidsbrist. Efter att undersökningen var klar beslutades det att konstruera två moduler. Den första använder en mätteknik som kallas PPG och används för att mäta hjärtfrekvens, även andningsfrekvensen estimeras och modulen är förberedd för att estimera blodsyre nivåa men signalbehandling och validering för detta är inte gjord. Den andra modulen mäter resistans i huden. I dessa moduler lades även till en temperatur sensor för att mäta hudtemperaturen. Tidsbrist har gjort att endast en av dem två modulerna kunnat realiserats. Den som realiserat är PPG modulen och modulen för hudresistans presenteras endast teoretiskt. PPG modulen genomför matningen med en transmissiv teknik på vänster öra och ger ut en acceptabel signal kvalité om sensorn får bra kontakt. Arbetet är avgränsat och inkluderar inte signalanalysen av signalen däremot visualiseras signalen i figurer.
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Wellington, Sean. "Algorithms for sensor validation and multisensor fusion." Thesis, Southampton Solent University, 2002. http://ssudl.solent.ac.uk/398/.
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Existing techniques for sensor validation and sensor fusion are often based on analytical sensor models. Such models can be arbitrarily complex and consequently Gaussian distributions are often assumed, generally with a detrimental effect on overall system performance. A holistic approach has therefore been adopted in order to develop two novel and complementary approaches to sensor validation and fusion based on empirical data. The first uses the Nadaraya-Watson kernel estimator to provide competitive sensor fusion. The new algorithm is shown to reliably detect and compensate for bias errors, spike errors, hardover faults, drift faults and erratic operation, affecting up to three of the five sensors in the array. The inherent smoothing action of the kernel estimator provides effective noise cancellation and the fused result is more accurate than the single 'best sensor'. A Genetic Algorithm has been used to optimise the Nadaraya-Watson fuser design. The second approach uses analytical redundancy to provide the on-line sensor status output μH∈[0,1], where μH=1 indicates the sensor output is valid and μH=0 when the sensor has failed. This fuzzy measure is derived from change detection parameters based on spectral analysis of the sensor output signal. The validation scheme can reliably detect a wide range of sensor fault conditions. An appropriate context dependent fusion operator can then be used to perform competitive, cooperative or complementary sensor fusion, with a status output from the fuser providing a useful qualitative indication of the status of the sensors used to derive the fused result. The operation of both schemes is illustrated using data obtained from an array of thick film metal oxide pH sensor electrodes. An ideal pH electrode will sense only the activity of hydrogen ions, however the selectivity of the metal oxide device is worse than the conventional glass electrode. The use of sensor fusion can therefore reduce measurement uncertainty by combining readings from multiple pH sensors having complementary responses. The array can be conveniently fabricated by screen printing sensors using different metal oxides onto a single substrate.
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Prajitno, Prawito. "Neuro-fuzzy methods in multisensor data fusion." Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251258.
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Remund, Quinn P. "Multisensor microwave remote sensing in the cryosphere /." Diss., CLICK HERE for online access, 2000. http://contentdm.lib.byu.edu/ETD/image/etd7.pdf.
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Remund, Quinn P. "Multisensor Microwave Remote Sensing in the Cryosphere." BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/72.
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Because the earth's cryosphere influences global weather patterns and climate, the scientific community has had great interest in monitoring this important region. Microwave remote sensing has proven to be a useful tool in estimating sea and glacial ice surface characteristics with both scatterometers and radiometers exhibiting high sensitivity to important ice properties. This dissertation presents an array of studies focused on extracting key surface features from multisensor microwave data sets. First, several enhanced resolution image reconstruction issues are addressed. Among these are the optimization of the scatterometer image reconstruction (SIR) algorithm for NASA scatterometer (NSCAT) data, an analysis of Ku-band azimuthal modulation in Antarctica, and inter-sensor European Remote Sensing Satellite (ERS) calibration. Next, various methods for the removal of atmospheric distortions in image reconstruction of passive radiometer observations are considered. An automated algorithm is proposed which determines the spatial extent of sea ice in the Arctic and Antarctic regions from NSCAT data. A multisensor iterative sea ice statistical classification method which adapts to the temporally varying signatures of ice types is developed. The sea ice extent and classification algorithms are adopted for current SeaWinds scatterometer data sets. Finally, the automated inversion of large-scale forward electromagnetic scattering of models is considered and used to study the temporal evolution of the scattering properties of polar sea ice.
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FLOR, H. R. "Development Of a Multisensorial System For Emotions Recognition." Universidade Federal do Espírito Santo, 2017. http://repositorio.ufes.br/handle/10/9561.
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Previous issue date: 2017-03-17<br>Automated reading and analysis of human emotion has the potential to be a powerful tool to develop a wide variety of applications, such as human-computer interaction systems, but, at the same time, this is a very difficult issue because the human communication is very complex. Humans employ multiple sensory systems in emotion recognition. At the same way, an emotionally intelligent machine requires multiples sensors to be able to create an affective interaction with users. Thus, this Master thesis proposes the development of a multisensorial system for automatic emotion recognition.
The multisensorial system is composed of three sensors, which allowed exploring different emotional aspects, as the eye tracking, using the IR-PCR technique, helped conducting studies about visual social attention; the Kinect, in conjunction with the FACS-AU system technique, allowed developing a tool for facial expression recognition; and the thermal camera, using the
FT-RoI technique, was employed for detecting facial thermal variation. When performing the multisensorial integration of the system, it was possible to obtain a more complete and varied analysis of the emotional aspects, allowing evaluate focal attention, valence comprehension, valence expressions, facial expression, valence recognition and arousal recognition. Experiments were performed with sixteen healthy adult volunteers and 105 healthy children
volunteers and the results were the developed system, which was able to detect eye gaze, recognize facial expression and estimate the valence and arousal for emotion recognition, This system also presents the potential to analyzed emotions of people by facial features using contactless sensors in semi-structured environments, such as clinics, laboratories, or classrooms. This system also presents the potential to become an embedded tool in robots to
endow these machines with an emotional intelligence for a more natural interaction with humans.
Keywords: emotion recognition, eye tracking, facial expression, facial thermal variation, integration multisensorial