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Journal articles on the topic 'Dynamic visual signal'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 January 2023

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1

Hirata, Yutaka. "Neural signal processing for dynamic visual stabilization." Brain & Neural Networks 11, no. 4 (2004): 176–92. http://dx.doi.org/10.3902/jnns.11.176.

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Nittrouer, Susan, and Joanna H. Lowenstein. "Beyond Recognition: Visual Contributions to Verbal Working Memory." Journal of Speech, Language, and Hearing Research 65, no. 1 (January 12, 2022): 253–73. http://dx.doi.org/10.1044/2021_jslhr-21-00177.

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Purpose: It is well recognized that adding the visual to the acoustic speech signal improves recognition when the acoustic signal is degraded, but how that visual signal affects postrecognition processes is not so well understood. This study was designed to further elucidate the relationships among auditory and visual codes in working memory, a postrecognition process. Design: In a main experiment, 80 young adults with normal hearing were tested using an immediate serial recall paradigm. Three types of signals were presented (unprocessed speech, vocoded speech, and environmental sounds) in thr

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Lajoie, Guillaume, and Lai-Sang Young. "Dynamic Signal Tracking in a Simple V1 Spiking Model." Neural Computation 28, no. 9 (September 2016): 1985–2010. http://dx.doi.org/10.1162/neco_a_00868.

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This work is part of an effort to understand the neural basis for our visual system’s ability, or failure, to accurately track moving visual signals. We consider here a ring model of spiking neurons, intended as a simplified computational model of a single hypercolumn of the primary visual cortex of primates. Signals that consist of edges with time-varying orientations localized in space are considered. Our model is calibrated to produce spontaneous and driven firing rates roughly consistent with experiments, and our two main findings, for which we offer dynamical explanation on the level of n

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Cezário, Rodrigo Roucourt, Vinicius Marques Lopez, Stanislav Gorb, and Rhainer Guillermo-Ferreira. "Dynamic iridescent signals of male copperwing damselflies coupled with wing-clapping displays: the perspective of different receivers." Biological Journal of the Linnean Society 134, no. 1 (June 2, 2021): 229–39. http://dx.doi.org/10.1093/biolinnean/blab068.

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Abstract Dynamic signals are a widespread phenomenon in several taxa, usually associated with intraspecific communication. In contrast, dynamic iridescent signals are detectable only at specific angles of illumination; hence, the animal can hide the signal to avoid detection when necessary. This structural coloration is mostly dependent on the illumination, the contrast against the background and the vision of the receiver. Complex behavioural displays can be coupled with structural coloration to create dynamic visual signals that enhance these functions. Here, we address whether iridescence o

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Pomante, A., L. P. J. Selen, and W. P. Medendorp. "Perception of the dynamic visual vertical during sinusoidal linear motion." Journal of Neurophysiology 118, no. 4 (October 1, 2017): 2499–506. http://dx.doi.org/10.1152/jn.00439.2017.

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The vestibular system provides information for spatial orientation. However, this information is ambiguous: because the otoliths sense the gravitoinertial force, they cannot distinguish gravitational and inertial components. As a consequence, prolonged linear acceleration of the head can be interpreted as tilt, referred to as the somatogravic effect. Previous modeling work suggests that the brain disambiguates the otolith signal according to the rules of Bayesian inference, combining noisy canal cues with the a priori assumption that prolonged linear accelerations are unlikely. Within this mod

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Gielen, CCAM, and JAM van Gisbergen. "The Visual Guidance of Saccades and Fast Aiming Movements." Physiology 5, no. 2 (April 1, 1990): 58–63. http://dx.doi.org/10.1152/physiologyonline.1990.5.2.58.

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Sensory signals are used to create an internal representation of the environment. There is good evidence that the same internal representation of target position in space is shared by different motor systems. A central problem is how the command signal is transformed from a spatial code at the sensory side into a dynamic activation signal appropriately matched to the properties of the effector system.

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J. B. Meyers, S. E. Prussia, and C. J. Karwoski. "Signal Detection Theory for Optimizing Dynamic Visual Inspection Performance." Applied Engineering in Agriculture 6, no. 4 (1990): 412–17. http://dx.doi.org/10.13031/2013.26406.

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López, María T., Antonio Fernández-Caballero, Miguel A. Fernández, José Mira, and Ana E. Delgado. "Visual surveillance by dynamic visual attention method." Pattern Recognition 39, no. 11 (November 2006): 2194–211. http://dx.doi.org/10.1016/j.patcog.2006.04.018.

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Ligon, Russell A., and Kevin J. McGraw. "Social costs enforce honesty of a dynamic signal of motivation." Proceedings of the Royal Society B: Biological Sciences 283, no. 1841 (October 26, 2016): 20161873. http://dx.doi.org/10.1098/rspb.2016.1873.

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Understanding the processes that promote signal reliability may provide important insights into the evolution of diverse signalling strategies among species. The signals that animals use to communicate must comprise mechanisms that prohibit or punish dishonesty, and social costs of dishonesty have been demonstrated for several fixed morphological signals (e.g. colour badges of birds and wasps). The costs maintaining the honesty of dynamic signals, which are more flexible and potentially cheatable, are unknown. Using an experimental manipulation of the dynamic visual signals used by male veiled

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Soundirarajan, Mirra, Mohammad Hossein Babini, Sue Sim, Visvamba Nathan, and Hamidreza Namazi. "Decoding of the Relationship between Brain and Facial Muscle Activities in Response to Dynamic Visual Stimuli." Fluctuation and Noise Letters 19, no. 04 (June 23, 2020): 2050041. http://dx.doi.org/10.1142/s0219477520500418.

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In this research, for the first time, we analyze the relationship between facial muscles and brain activities when human receives different dynamic visual stimuli. We present different moving visual stimuli to the subjects and accordingly analyze the complex structure of electromyography (EMG) signal versus the complex structure of electroencephalography (EEG) signal using fractal theory. Based on the obtained results from analysis, presenting the stimulus with greater complexity causes greater change in the complexity of EMG and EEG signals. Statistical analysis also supported the results of

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Jiandong, Zhao, and Ma Shuo. "Dynamic Visual Performance of LED with Different Color Temperature." International Journal of Signal Processing, Image Processing and Pattern Recognition 9, no. 6 (June 30, 2016): 437–46. http://dx.doi.org/10.14257/ijsip.2016.9.6.38.

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van de Ven, Vincent, Bert Jans, Rainer Goebel, and Peter De Weerd. "Early Human Visual Cortex Encodes Surface Brightness Induced by Dynamic Context." Journal of Cognitive Neuroscience 24, no. 2 (February 2012): 367–77. http://dx.doi.org/10.1162/jocn_a_00126.

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Visual scene perception owes greatly to surface features such as color and brightness. Yet, early visual cortical areas predominantly encode surface boundaries rather than surface interiors. Whether human early visual cortex may nevertheless carry a small signal relevant for surface perception is a topic of debate. We induced brightness changes in a physically constant surface by temporally modulating the luminance of surrounding surfaces in seven human participants. We found that fMRI activity in the V2 representation of the constant surface was in antiphase to luminance changes of surroundin

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Yuan, Shuai, and Lei Guo. "Signal Analysis on Nasal Consonant Based on Nasal Flow Signal." Advanced Materials Research 748 (August 2013): 605–9. http://dx.doi.org/10.4028/www.scientific.net/amr.748.605.

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This paper studies Nasal Initials duration, degree of nasal and formants of Mandarin through Nasal flow meter , using Real-time visual feedback and sonogram reveals nasal interface and the dynamic changes, and sound imposed direction followed by a vowel sound, Reveals the complexity of the nasal articulation, the result shows that the degree of nasal and formant of Monosyllabic are different because different nasal sound acts as initials.

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Grafe, T. Ulmar, and Joremy A. Tony. "Temporal variation in acoustic and visual signalling as a function of stream background noise in the Bornean foot-flagging frog, Staurois parvus." Journal of Ecoacoustics 1, no. 1 (October 26, 2017): 1. http://dx.doi.org/10.22261/jea.x74qe0.

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High background noise can interfere with signal detection and perception. Bornean foot-flagging frogs,Staurois parvus, live along noisy streams and use both acoustic and visual signals to communicate. It remains unclear why acoustic signalling is retained given that visual signalling appears to have clear advantages under these noisy conditions. We hypothesized that temporal dynamics in stream noise have shaped the multimodal communication system inS. parvuswith acoustic signalling at an advantage under more quiet conditions, whereas visual signals will prevail when the noise of rushing water

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White, Thomas E. "Jewelled spiders manipulate colour-lure geometry to deceive prey." Biology Letters 13, no. 3 (March 2017): 20170027. http://dx.doi.org/10.1098/rsbl.2017.0027.

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Selection is expected to favour the evolution of efficacy in visual communication. This extends to deceptive systems, and predicts functional links between the structure of visual signals and their behavioural presentation. Work to date has primarily focused on colour, however, thereby understating the multicomponent nature of visual signals. Here I examined the relationship between signal structure, presentation behaviour, and efficacy in the context of colour-based prey luring. I used the polymorphic orb-web spider Gasteracantha fornicata , whose yellow- or white-and-black striped dorsal col

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Woo, Kevin. "Signal Competition in Dynamic Visual Environments: Relative Conspicuousness of Social Displays in the Jacky Dragon (Amphibolurus muricatus)." Animal Behavior and Cognition 8, no. 3 (August 3, 2021): 415–45. http://dx.doi.org/10.26451/abc.08.03.07.2021.

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Selection for conspicuousness has been an important force on visual signal design. Although signal efficacy has been extensively studied in acoustic systems, few studies have examined this attribute in dynamic visual signals. Here, I simulated signal competition between Jacky lizards (Amphibolurus muricatus) by presenting the motor patterns (tail-flick, push-up body rock, and slow arm wave) in isolation that are typically used in social communication. Phase 1 used four digital video playback systems to present simultaneous animated display combinations on opposing monitors to a subject that wa

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Hamner, J. W., and J. Andrew Taylor. "Automated quantification of sympathetic beat-by-beat activity, independent of signal quality." Journal of Applied Physiology 91, no. 3 (September 1, 2001): 1199–206. http://dx.doi.org/10.1152/jappl.2001.91.3.1199.

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Sympathetic nerve activity (SNA) can provide critical information on cardiovascular regulation; however, in a typical laboratory setting, adequate recordings require assiduous effort, and otherwise high-quality recordings may be clouded by frequent baseline shifts, noise spikes, and muscle twitches. Visually analyzing this type of signal can be a tedious and subjective evaluation, whereas objective analysis through signal averaging is impossible. We propose a new automated technique to identify bursts through objective detection criteria, eliminating artifacts and preserving a beat-by-beat SNA

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Yeasin, M., and S. Chaudhuri. "Visual understanding of dynamic hand gestures." Pattern Recognition 33, no. 11 (November 2000): 1805–17. http://dx.doi.org/10.1016/s0031-3203(99)00175-2.

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How, Martin J., Jochen Zeil, and Jan M. Hemmi. "Variability of a dynamic visual signal: the fiddler crab claw-waving display." Journal of Comparative Physiology A 195, no. 1 (November 12, 2008): 55–67. http://dx.doi.org/10.1007/s00359-008-0382-7.

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Krebs, Julia, Evie Malaia, Ronnie B. Wilbur, and Dietmar Roehm. "EEG analysis based on dynamic visual stimuli." Hrvatska revija za rehabilitacijska istraživanja 58, Special Issue (October 12, 2022): 245–66. http://dx.doi.org/10.31299/hrri.58.si.13.

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This paper reviews best practices for experimental design and analysis for sign language research using neurophysiological methods, such as electroencephalography (EEG) and other methods with high temporal resolution, as well as identifies methodological challenges in neurophysiological research on natural sign language processing. In particular, we outline the considerations for generating linguistically and physically well-controlled stimuli accounting for 1) the layering of manual and non-manual information at different timescales, 2) possible unknown linguistic and non-linguistic visual cu

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Nikolaou, F., C. Orphanidou, P. Papakyriakou, K. Murphy, R. G. Wise, and G. D. Mitsis. "Spontaneous physiological variability modulates dynamic functional connectivity in resting-state functional magnetic resonance imaging." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2067 (May 13, 2016): 20150183. http://dx.doi.org/10.1098/rsta.2015.0183.

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It is well known that the blood oxygen level-dependent (BOLD) signal measured by functional magnetic resonance imaging (fMRI) is influenced—in addition to neuronal activity—by fluctuations in physiological signals, including arterial CO 2 , respiration and heart rate/heart rate variability (HR/HRV). Even spontaneous fluctuations of the aforementioned physiological signals have been shown to influence the BOLD fMRI signal in a regionally specific manner. Related to this, estimates of functional connectivity between different brain regions, performed when the subject is at rest, may be confounde

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Moro, Stefania S., and Jennifer K. E. Steeves. "Intact Dynamic Visual Capture in People With One Eye." Multisensory Research 31, no. 7 (2018): 675–88. http://dx.doi.org/10.1163/22134808-20181311.

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Abstract Observing motion in one modality can influence the perceived direction of motion in a second modality (dynamic capture). For example observing a square moving in depth can influence the perception of a sound to increase in loudness. The current study investigates whether people who have lost one eye are susceptible to audiovisual dynamic capture in the depth plane similar to binocular and eye-patched viewing control participants. Partial deprivation of the visual system from the loss of one eye early in life results in changes in the remaining intact senses such as hearing. Linearly e

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Hansen, Bruce C., Michelle R. Greene, and David J. Field. "Dynamic Electrode-to-Image (DETI) mapping reveals the human brain’s spatiotemporal code of visual information." PLOS Computational Biology 17, no. 9 (September 27, 2021): e1009456. http://dx.doi.org/10.1371/journal.pcbi.1009456.

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A number of neuroimaging techniques have been employed to understand how visual information is transformed along the visual pathway. Although each technique has spatial and temporal limitations, they can each provide important insights into the visual code. While the BOLD signal of fMRI can be quite informative, the visual code is not static and this can be obscured by fMRI’s poor temporal resolution. In this study, we leveraged the high temporal resolution of EEG to develop an encoding technique based on the distribution of responses generated by a population of real-world scenes. This approa

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Suder, K., K. Funke, and F. Woergoetter. "Dynamic Spatiotemporal Restructuring of Visual Receptive Fields through Selective Attention: A Model." Perception 26, no. 1_suppl (August 1997): 375. http://dx.doi.org/10.1068/v970246.

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Cells in the lateral geniculate nucleus (LGN) strongly change their behaviour covarying with different EEG states. During sleep and drowsiness (synchronised alpha, delta-wave EEG) short transient responses prevail whereas during a desynchronised ‘alert’ EEG (beta-waves) long-lasting tonic responses are observed. We propose that this is part of a mechanism used to restructure the spatial and temporal characteristics of the receptive fields in LGN and cortex reflecting changing states of selective attention. To this end we present a model of the primary visual pathway using integrate-and-fire ne

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Nattkemper, D. "Visual Motion Induces Effector Movement." Perception 26, no. 1_suppl (August 1997): 280. http://dx.doi.org/10.1068/v970334.

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A left-hand response to a left-hand stimulus is faster than a right-hand response to the same stimulus, even when spatial location is irrelevant to the task at hand. The existence of this spatial stimulus-response correspondence effect suggests that spatial properties of actions to be performed can be pre-specified by spatial properties of perceived events, so that actions are induced by perceptual content. If this view is correct, one should be able to show that not only spatial positions of actions can be pre-specified by properties of perceived events, but other features of actions as well.

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Kasap, Bahadir, and A. John van Opstal. "Modeling auditory-visual evoked eye-head gaze shifts in dynamic multisteps." Journal of Neurophysiology 119, no. 5 (May 1, 2018): 1795–808. http://dx.doi.org/10.1152/jn.00502.2017.

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In dynamic visual or auditory gaze double-steps, a brief target flash or sound burst is presented in midflight of an ongoing eye-head gaze shift. Behavioral experiments in humans and monkeys have indicated that the subsequent eye and head movements to the target are goal-directed, regardless of stimulus timing, first gaze shift characteristics, and initial conditions. This remarkable behavior requires that the gaze-control system 1) has continuous access to accurate signals about eye-in-head position and ongoing eye-head movements, 2) that it accounts for different internal signal delays, and

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Li, Peixia, Boyu Chen, Dong Wang, and Huchuan Lu. "Visual tracking by dynamic matching-classification network switching." Pattern Recognition 107 (November 2020): 107419. http://dx.doi.org/10.1016/j.patcog.2020.107419.

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Chubala, Chrissy M., Tyler M. Ensor, Ian Neath, and Aimée M. Surprenant. "Dynamic Visual Noise Does Not Affect Memory for Fonts." Experimental Psychology 67, no. 3 (March 2020): 161–68. http://dx.doi.org/10.1027/1618-3169/a000491.

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Abstract. Dynamic visual noise (DVN) selectively impairs memory for some types of stimuli (e.g., colors, textures, concrete words), but not for others (e.g., matrices, Chinese characters, simple shapes). According to the image definition hypothesis, the key difference is whether the stimulus leads to images that are ill-defined or well-defined. The former will be affected because the addition of noise quickly reduces the usefulness of the image in supplying information about the item's identity. The image definition hypothesis predicts that fonts should lead to ill-defined images and therefore

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Col, Alcebiades Dal, Paola Valdivia, Fabiano Petronetto, Fabio Dias, Claudio T. Silva, and L. Gustavo Nonato. "Wavelet-Based Visual Analysis of Dynamic Networks." IEEE Transactions on Visualization and Computer Graphics 24, no. 8 (August 1, 2018): 2456–69. http://dx.doi.org/10.1109/tvcg.2017.2746080.

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Raffi, Milena, Alessandro Piras, Roberta Calzavara, and Salvatore Squatrito. "Area PEc Neurons Use a Multiphasic Pattern of Activity to Signal the Spatial Properties of Optic Flow." BioMed Research International 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/6495872.

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The cortical representation of visual perception requires the integration of several-signal processing distributed across many cortical areas, but the neural substrates of such perception are largely unknown. The type of firing pattern exhibited by single neurons is an important indicator of dynamic circuitry within or across cortical areas. Neurons in area PEc are involved in the spatial mapping of the visual field; thus, we sought to analyze the firing pattern of activity of PEc optic flow neurons to shed some light on the cortical processing of visual signals. We quantified the firing activ

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Bachmann, Judith C., Fabio Cortesi, Matthew D. Hall, N. Justin Marshall, Walter Salzburger, and Hugo F. Gante. "Real-time social selection maintains honesty of a dynamic visual signal in cooperative fish." Evolution Letters 1, no. 5 (October 25, 2017): 269–78. http://dx.doi.org/10.1002/evl3.24.

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Pinchuk, Pavlo, and Jean-Luc Margot. "A Machine Learning–based Direction-of-origin Filter for the Identification of Radio Frequency Interference in the Search for Technosignatures." Astronomical Journal 163, no. 2 (January 20, 2022): 76. http://dx.doi.org/10.3847/1538-3881/ac426f.

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Abstract Radio frequency interference (RFI) mitigation remains a major challenge in the search for radio technosignatures. Typical mitigation strategies include a direction-of-origin (DoO) filter, where a signal is classified as RFI if it is detected in multiple directions on the sky. These classifications generally rely on estimates of signal properties, such as frequency and frequency drift rate. Convolutional neural networks (CNNs) offer a promising complement to existing filters because they can be trained to analyze dynamic spectra directly, instead of relying on inferred signal propertie

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Młynarski, Wiktor, and Gašper Tkačik. "Efficient coding theory of dynamic attentional modulation." PLOS Biology 20, no. 12 (December 21, 2022): e3001889. http://dx.doi.org/10.1371/journal.pbio.3001889.

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Activity of sensory neurons is driven not only by external stimuli but also by feedback signals from higher brain areas. Attention is one particularly important internal signal whose presumed role is to modulate sensory representations such that they only encode information currently relevant to the organism at minimal cost. This hypothesis has, however, not yet been expressed in a normative computational framework. Here, by building on normative principles of probabilistic inference and efficient coding, we developed a model of dynamic population coding in the visual cortex. By continuously a

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Meng, Kun, and Fulong Liu. "Structural Design of Handicrafts Based on Dynamic Simulation Technology." Advances in Multimedia 2022 (August 10, 2022): 1–10. http://dx.doi.org/10.1155/2022/7099856.

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In order to improve the effect of handicraft structure design, this study combines the dynamic simulation technology to build a handicraft structure design system and transmits data through dynamic simulation signals to improve the effectiveness of the interactive design of artworks. In order to provide a simpler and faster development process for interactive media applications, this study develops an interactive media art design system with a node-based visual programming model as the core processing logic. The digital Gaussian shaping method based on the programmable logic device can not onl

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Liu, Chong, Miao Duan, Zhihao Duan, Aizun Liu, Zhiguo Lu, and Hong Wang. "An SSVEP-based BCI with LEDs visual stimuli using dynamic window CCA algorithm." Biomedical Signal Processing and Control 76 (July 2022): 103727. http://dx.doi.org/10.1016/j.bspc.2022.103727.

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Chen, Shiming, Hao Wang, Hailang Li, Zhongtang Wei, Pengxu Zheng, and Shibin Wei. "On-board Dynamic Measuring of Long-wave Track Irregularity based on Visual Inertial Fusion." Journal of Physics: Conference Series 2396, no. 1 (December 1, 2022): 012036. http://dx.doi.org/10.1088/1742-6596/2396/1/012036.

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Abstract This paper studies an inspection method to measure the long-wave track irregularities using the signals of IMU (Inertial Measurement Unit) and Laser & Camera installed on a bogie, which is implemented in comprehensive inspection trains. To reduce the influence of random noise and vehicle vibration, the mechanical structure is optimized; the spatial-dependent change of the "two-point chord" on the track is observed by high-precision FOC (Fiber Optic Gyroscope) and laser camera components; the angular velocity measurement method is deduced. To eliminate high-frequency attenuation of

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Wang, Jin. "Research on the Multimedia Music Courseware Design Based on Internet Resource." Applied Mechanics and Materials 380-384 (August 2013): 2095–98. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.2095.

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With the advance of computer information science and technology, multimedia courseware has been widely used in the application and development of teaching practice. The multimedia music courseware has good auditory dynamic guide and vividness. It can produce very good teaching effect in the teaching process. Music lessons belong to audio-visual vocal class teaching, the abstract of course makes music teaching need to develop multimedia dynamic courseware. Music lessons belong to audio-visual vocal class teaching, the abstract of course makes music teaching need to develop multimedia dynamic co

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Oh, Minseok, Sergey Velichko, Scott Johnson, Michael Guidash, Hung-Chih Chang, Daniel Tekleab, Bob Gravelle, et al. "Automotive 3.0 µm Pixel High Dynamic Range Sensor with LED Flicker Mitigation." Sensors 20, no. 5 (March 4, 2020): 1390. http://dx.doi.org/10.3390/s20051390.

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We present and discuss parameters of a high dynamic range (HDR) image sensor with LED flicker mitigation (LFM) operating in automotive temperature range. The total SNR (SNR including dark fixed pattern noise), of the sensor is degraded by floating diffusion (FD) dark current (DC) and dark signal non-uniformity (DSNU). We present results of FD DC and DSNU reduction, to provide required SNR versus signal level at temperatures up to 120 °C. Additionally we discuss temperature dependencies of quantum efficiency (QE), sensitivity, color effects, and other pixel parameters for backside illuminated i

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Chino, Yuzo M. "Receptive-Field Plasticity in the Adult Visual Cortex: Dynamic Signal Rerouting or Experience-Dependent Plasticity." Seminars in Neuroscience 9, no. 1-2 (1997): 34–46. http://dx.doi.org/10.1006/smns.1997.0104.

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White, Thomas E., and Tanya Latty. "Flies improve the salience of iridescent sexual signals by orienting toward the sun." Behavioral Ecology 31, no. 6 (October 14, 2020): 1401–9. http://dx.doi.org/10.1093/beheco/araa098.

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Abstract Sunlight is the ultimate source of most visual signals. Theory predicts strong selection for its effective use during communication, with functional links between signal designs and display behaviors a likely result. This is particularly true for iridescent structural colors, whose moment-to-moment appearance bears a heightened sensitivity to the position of signalers, receivers, and the sun. Here, we experimentally tested this prediction using Lispe cana, a muscid fly in which males present their structurally colored faces and wings to females during ground-based sexual displays. In

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Chen, Zhihua, Zhenzhu Wang, Bin Sheng, Chao Li, Ruimin Shen, and Ping Li. "Dynamic RGB-to-CMYK conversion using visual contrast optimisation." IET Image Processing 11, no. 7 (July 1, 2017): 539–49. http://dx.doi.org/10.1049/iet-ipr.2016.0989.

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NAMAZI, HAMIDREZA, TIRDAD SEIFI ALA, and HOVAGIM BAKARDJIAN. "DECODING OF STEADY-STATE VISUAL EVOKED POTENTIALS BY FRACTAL ANALYSIS OF THE ELECTROENCEPHALOGRAPHIC (EEG) SIGNAL." Fractals 26, no. 06 (December 2018): 1850092. http://dx.doi.org/10.1142/s0218348x18500925.

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Analysis of the brain response to different types of external stimuli has always been one of the major research areas in behavioral neuroscience. The electroencephalography (EEG) technique combined with different signal analysis approaches has been especially successful in revealing the detailed dynamic properties of the neural response to exogenous stimulation. In this analysis, we evaluated the nonlinear structure of the EEG signal using fractal theory in rest and visual stimulation (checkerboard reversal at 8, 14 and 28[Formula: see text]Hz). Our analysis showed a significant influence of s

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Vingerhoets, R. A. A., W. P. Medendorp, and J. A. M. Van Gisbergen. "Body-Tilt and Visual Verticality Perception During Multiple Cycles of Roll Rotation." Journal of Neurophysiology 99, no. 5 (May 2008): 2264–80. http://dx.doi.org/10.1152/jn.00704.2007.

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To assess the effects of degrading canal cues for dynamic spatial orientation in human observers, we tested how judgments about visual-line orientation in space (subjective visual vertical task, SVV) and estimates of instantaneous body tilt (subjective body-tilt task, SBT) develop in the course of three cycles of constant-velocity roll rotation. These abilities were tested across the entire tilt range in separate experiments. For comparison, we also obtained SVV data during static roll tilt. We found that as tilt increased, dynamic SVV responses became strongly biased toward the head pole of t

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Pan, Jia-cheng, Dong-ming Han, Fang-zhou Guo, Da-wei Zhou, Nan Cao, Jing-rui He, Ming-liang Xu, and Wei Chen. "RCAnalyzer: visual analytics of rare categories in dynamic networks." Frontiers of Information Technology & Electronic Engineering 21, no. 4 (April 2020): 491–506. http://dx.doi.org/10.1631/fitee.1900310.

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Lu, Zhong-Lin, Xiangrui Li, Bosco S. Tjan, Barbara A. Dosher, and Wilson Chu. "Attention Extracts Signal in External Noise: A BOLD fMRI Study." Journal of Cognitive Neuroscience 23, no. 5 (May 2011): 1148–59. http://dx.doi.org/10.1162/jocn.2010.21511.

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On the basis of results from behavioral studies that spatial attention improves the exclusion of external noise in the target region, we predicted that attending to a spatial region would reduce the impact of external noise on the BOLD response in corresponding cortical areas, seen as reduced BOLD responses in conditions with large amounts of external noise but relatively low signal, and increased dynamic range of the BOLD response to variations in signal contrast. We found that, in the presence of external noise, covert attention reduced the trial-by-trial BOLD response by 15.5–18.9% in low s

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Maya-Vetencourt, José Fernando, and Nicola Origlia. "Visual Cortex Plasticity: A Complex Interplay of Genetic and Environmental Influences." Neural Plasticity 2012 (2012): 1–14. http://dx.doi.org/10.1155/2012/631965.

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The central nervous system architecture is highly dynamic and continuously modified by sensory experience through processes of neuronal plasticity. Plasticity is achieved by a complex interplay of environmental influences and physiological mechanisms that ultimately activate intracellular signal transduction pathways regulating gene expression. In addition to the remarkable variety of transcription factors and their combinatorial interaction at specific gene promoters, epigenetic mechanisms that regulate transcription have emerged as conserved processes by which the nervous system accomplishes

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Smout, Cooper A., and Jason B. Mattingley. "Spatial Attention Enhances the Neural Representation of Invisible Signals Embedded in Noise." Journal of Cognitive Neuroscience 30, no. 8 (August 2018): 1119–29. http://dx.doi.org/10.1162/jocn_a_01283.

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Recent evidence suggests that voluntary spatial attention can affect neural processing of visual stimuli that do not enter conscious awareness (i.e., invisible stimuli), supporting the notion that attention and awareness are dissociable processes [Wyart, V., Dehaene, S., & Tallon-Baudry, C. Early dissociation between neural signatures of endogenous spatial attention and perceptual awareness during visual masking. Frontiers in Human Neuroscience, 6, 1–14, 2012; Watanabe, M., Cheng, K., Murayama, Y., Ueno, K., Asamizuya, T., Tanaka, K., et al. Attention but not awareness modulates the BOLD s

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ROMANENKO, Tetiana, and Nataliia RUSINA. "USE OF VISUAL PROGRAMMING LANGUAGE FOR SIMULATION OF DYNAMIC SYSTEMS." HERALD OF KHMELNYTSKYI NATIONAL UNIVERSITY 295, no. 2 (May 2021): 109–15. http://dx.doi.org/10.31891/2307-5732-2021-295-2-109-115.

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The article presents examples of research of typical links of linear systems and construction and study of transient functions, namely: research of influence of parameters of elements of systems of automatic control of its quality. Programs for automatic control are developing rapidly, the main areas of which are related to the optimization of technological processes and robotics. This encourages the introduction into modern production of high-precision digital systems with more extensive use of computer systems. In the simulation process, there is often a need to carefully select and apply re

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Kim, Jeffrey J., Stacey Parker, Trent Henderson, and James N. Kirby. "Physiological fractals: visual and statistical evidence across timescales and experimental states." Journal of The Royal Society Interface 17, no. 167 (June 2020): 20200334. http://dx.doi.org/10.1098/rsif.2020.0334.

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A marker of engaging in compassion meditation and related processes is an increase in heart-rate variability (HRV), typically interpreted as a marker of parasympathetic nervous system response. While insightful, open questions remain. For example, which timescale is best to examine the effects of meditation and related practices on HRV? Furthermore, how might advanced time-series analyses––such as stationarity––be able to examine dynamic changes in the mean and variance of the HRV signal across time? Here we apply such methods to previously published data, which measured HRV pre- and post- a t

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Upadhyaya, Prashant, Omar Farooq, M. R. Abidi, and Priyanka Varshney. "Comparative Study of Visual Feature for Bimodal Hindi Speech Recognition." Archives of Acoustics 40, no. 4 (December 1, 2015): 609–19. http://dx.doi.org/10.1515/aoa-2015-0061.

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Abstract In building speech recognition based applications, robustness to different noisy background condition is an important challenge. In this paper bimodal approach is proposed to improve the robustness of Hindi speech recognition system. Also an importance of different types of visual features is studied for audio visual automatic speech recognition (AVASR) system under diverse noisy audio conditions. Four sets of visual feature based on Two-Dimensional Discrete Cosine Transform feature (2D-DCT), Principal Component Analysis (PCA), Two-Dimensional Discrete Wavelet Transform followed by DC

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