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Tesi sul tema "Primary Visual Cortex (PVC)"

Autore: Grafiati
Pubblicato: 2 novembre 2024
Ultima modifica: 31 luglio 2025

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1

Remy, Irving. "Les fonctions visuelles rétiniennes et corticales dans les troubles du spectre de la schizophrénie et les situations à risque de psychose." Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAJ030.

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Abstract (sommario):
Les troubles psychotiques sont caractérisés par d’importantes conséquences fonctionnelles avec des preuves émergentes concernant l’altération des fonctions visuelles de bas niveau. Le lien anatomique et fonctionnel entre la rétine et le cortex visuel a notamment permis d’émettre des hypothèses quant à l’association entre les altérations des deux étages visuels. Nous avons investigué les mesures électrophysiologiques visuelles rétiniennes et corticales dans les troubles du spectre de la schizophrénie et dans les situations à risque de psychose dont l’usage régulier de cannabis et les phases pré
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2

Fotheringhame, David K. "Temporal coding in primary visual cortex." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339357.

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3

Nauhaus, Ian Michael. "Functional connectivity in primary visual cortex." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1692099811&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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4

Thulin, Nilsson Linnea. "The Role of Primary Visual Cortex in Visual Awareness." Thesis, Högskolan i Skövde, Institutionen för biovetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-11623.

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Abstract (sommario):
Despite its great complexity, a great deal is known about the organization and information-processing properties of the visual system. However, the neural correlates of visual awareness are not yet understood. By studying patients with blindsight, the primary visual cortex (V1) has attracted a lot of attention recently. Although this brain area appears to be important for visual awareness, its exact role is still a matter of debate. Interactive models propose a direct role for V1 in generating visual awareness through recurrent processing. Hierarchal models instead propose that awareness is ge
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5

Krug, Kristine. "Ordering geniculate input into primary visual cortex." Thesis, University of Oxford, 1997. https://ora.ox.ac.uk/objects/uuid:b342ffae-4a31-4171-94a6-83cb516e83fe.

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Abstract (sommario):
Precise point-to-point connectivity is the basis of ordered maps of the visual field in the brain. One point in the visual field is represented at one locus in the dLGN and one locus in primary visual cortex. A fundamental problem in the development of most sensory systems is the creation of the topographic projections which underlie these maps. Mechanisms ranging from ordered ingrowth of fibres, through chemical guidance of axons to sculpting of the map from an early exuberant input have been proposed. However, we know little about how ordered maps are created beyond the first relay. What we
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6

Hesam, Shariati Nastaran. "A functional model for primary visual cortex." Thesis, The University of Sydney, 2012. http://hdl.handle.net/2123/8753.

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Abstract (sommario):
Many neurons in mammalian primary visual cortex have properties such as sharp tuning for contour orientation, strong selectivity for motion direction, and insensitivity to stimulus polarity, that are not shared with their sub-cortical counterparts. Successful models have been developed for a number of these properties but in one case, direction selectivity, there is no consensus about underlying mechanisms. This thesis describes a model that accounts for many of the empirical observations concerning direction selectivity. The model comprises a single column of cat primary visual cortex and a s
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7

Rudiger, Philipp John Frederic. "Development and encoding of visual statistics in the primary visual cortex." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/25469.

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Abstract (sommario):
How do circuits in the mammalian cerebral cortex encode properties of the sensory environment in a way that can drive adaptive behavior? This question is fundamental to neuroscience, but it has been very difficult to approach directly. Various computational and theoretical models can explain a wide range of phenomena observed in the primary visual cortex (V1), including the anatomical organization of its circuits, the development of functional properties like orientation tuning, and behavioral effects like surround modulation. However, so far no model has been able to bridge these levels of de
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8

De, Pasquale Roberto. "Visual discrimination learning and LTP-like changes in primary visual cortex." Doctoral thesis, Scuola Normale Superiore, 2009. http://hdl.handle.net/11384/85939.

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9

Spacek, Martin A. "Characterizing patches of primary visual cortex with minimal bias." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/53975.

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Abstract (sommario):
The brain is highly complex, and studying it requires simplifying experiments, analyses, and theories. New techniques can capture more of the brain's complexity while reducing biases in our understanding of how it works. This thesis describes experiments in primary visual cortex of anesthetized cat, using high-density silicon multisite electrodes to simultaneously record from as many neurons as possible across all cortical layers, thereby characterizing local cortical populations with minimal bias. Recordings were maintained for many hours at a time, and included both spontaneous and stimulus-
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10

Ranson, Adam. "Development and plasticity of the mouse primary visual cortex." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/54216/.

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A strain difference was observed in juvenile OD plasticity between C57BL/6J and C57BL/6JOlaHsd mice whereby open eye 'homeostatic' potentiation was completely absent in the C57BL/6JOlaHsd strain. This was accompanied by an absence of dark exposure induced synaptic scaling as measured <italic>ex vivo.</italic> In contrast in adulthood both strains showed comparable open eye potentiation, suggesting a mechanistic difference between juvenile and adult plasticity. Preliminary data suggests that while juvenile open eye potentiation is homeostatic, in adulthood it may be more LTP like and dependent
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11

Edwards, Grace. "Predictive feedback to the primary visual cortex during saccades." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5861/.

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Abstract (sommario):
Perception of our sensory environment is actively constructed from sensory input and prior expectations. These expectations are created from knowledge of the world through semantic memories, spatial and temporal contexts, and learning. Multiple frameworks have been created to conceptualise this active perception, these frameworks will be further referred to as inference models. There are three elements of inference models which have prevailed in these frameworks. Firstly, the presence of internal generative models for the visual environment, secondly feedback connections which project predicti
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12

Liu, Xiaochen. "Modelling Functional Maps and Associated Visual Gamma Activities in the Primary Visual Cortex." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/28536.

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Abstract (sommario):
The mammalian primary visual cortex (V1) has been extensively studied over the last decades to probe the neural mechanisms behind visual perception of elementary visual features such as edges, direction of motion, and colour. Numerous experiments have visualized the ordered arrangement of various functional maps in V1 and measured the neural activity patterns associated with them. However, only a few studies have quantitatively modelled the influences of the spatial structure of the functional maps on the neural activities. Moreover, the experimental maps usually show a great degree of irregul
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13

Ajina, Sara. "Changes in connectivity, structure and function following damage to the primary visual cortex." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:2e274261-c71a-4ad1-82cf-2fe6bbdbf673.

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Abstract (sommario):
Residual vision, or blindsight, following damage to the primary visual cortex was first identified almost a century ago. However, the mechanism and pathways underlying this ability, as well as the extent of visual function, remain unclear and are a continuing source of speculation. The work presented here goes some way to try to address these questions, investigating 18 patients with V1 damage and homonymous visual field loss acquired in adulthood. Six experimental chapters explore the extent and potential for visual function after V1 damage, and apply novel neuroimaging paradigms and techniqu
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14

Sengpiel, Frank. "Mechanisms of binocular integration in the mammalian primary visual cortex." Thesis, University of Oxford, 1994. https://ora.ox.ac.uk/objects/uuid:e2337b16-966b-4e65-b727-db7cfa956ef6.

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Abstract (sommario):
Combining the images seen by the two eyes into a single percept is one of the most challenging computational tasks that the visual cortex has to solve. The first stage at which information from the two retinae converges on individual neurons is the primary visual cortex, VI or area 17. Here, I describe anatomical segregation and interocular suppression as two mechanisms for obviating potential interocular conflict. I have studied VI of the common marmoset (Callithrix jacchus), a New World monkey, with both neurophysiological and anatomical methods. Although similar in most respects to VI of th
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15

Schulz, D. P. A. "The structure of functional connectivity in cat primary visual cortex." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1394406/.

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Abstract (sommario):
The key to understanding how the brain works is to understand the computations it performs. The structure of anatomical and functional connectivity determines what the brain can compute and how it does so. Correlations have served as a tool for analysing connectivity for over five decades. The mammalian visual cortex has become the most intensively researched cortical area and is unmatched for our knowledge of its anatomical layout and, most importantly, stimulus selectivity. Furthermore, recent perspectives on correlations have arisen from information theory and network models of the brain. T
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16

Berga, Garreta David. "Understanding eye movements: psychophysics and a model of primary visual cortex." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/667901.

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En aquesta tesi intentaré explicar (1) com movem els ulls, (2) com fer màquines que entenguin la informació visual i executar moviments oculars, i (3) com fer que aquestes màquines entenguin tasques per tal de decidir per aquets moviments oculars. (1) Hem analitzat del comportament dels moviments oculars provocat per les diferències de característiques de baix nivell amb una base de dades d’imatges composada per 230 patrons generats sintèticament. S’han generat un total de 15 tipus d’estímuls (p.e. orientació, brillantor, color, tamany, etc.), amb 7 contrastos per cada categoría de carac
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17

Howarth, Christopher. "Pattern adaptation and its interocular transfer in the primary visual cortex." Thesis, Cardiff University, 2008. http://orca.cf.ac.uk/54710/.

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Abstract (sommario):
Adaptation to a high contrast grating temporarily reduces the contrast sensitivity of neurons in the primary visual cortex (VI). If this adaptation is induced in one eye and the contrast tested with the other a partial transfer of the after-effect is produced, known as interocular transfer (IOT). Intrinsic hyperpolarisation of a cells membrane explains most of this effect, but not the orientation selective nature of adaptation. Optical imaging of intrinsic signals in anaesthetised cats and tree shrews was used to visualise orientation selective responses in VI before and after brief and chroni
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18

Cottam, J. C. H. "The role of interneurons in sensory processing in primary visual cortex." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1402363/.

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Abstract (sommario):
Cortical networks are comprised of a multitude of cell types. To understand sensory processing, the function and interaction of these cell types must be investigated. Neurons can be separated into two main groups: excitatory pyramidal (Pyr) cells and inhibitory interneurons. Inhibitory interneurons make up 20% of the total cortical neuronal population and they exhibit a striking array of molecular, morphological and electrophysiological characteristics. The most numerous are the parvalbumin-expressing (PV+) interneurons, accounting for 35-40% of the interneuron population in adult mouse visual
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19

Ko, H. "Functional specificity of local synaptic connections in the primary visual cortex." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1344050/.

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Abstract (sommario):
The capacity of the neocortex to process sensory stimuli relies on interactions between millions of neurons connected by trillions of synaptic connections in dedicated networks. If we are to understand how the brain represents external input, we must study the principles of neuronal interaction at the network level, and this requires us to uncover how connectivity between neurons relates to their function. To investigate the connectivity-function relationship, we developed a novel experimental approach to reveal the functional specificity of local synaptic connections between different cell ty
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20

Stevens, Jean-Luc Richard. "Spatiotemporal properties of evoked neural response in the primary visual cortex." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31330.

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Abstract (sommario):
Understanding how neurons in the primary visual cortex (V1) of primates respond to visual patterns has been a major focus of research in neuroscience for many decades. Numerous different experimental techniques have been used to provide data about how the spatiotemporal patterns of light projected from the visual environment onto the retina relate to the spatiotemporal patterns of neural activity evoked in the visual cortex, across disparate spatial and temporal scales. However, despite the variety of data sources available (or perhaps because of it), there is still no unified explanation for
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21

Dylda, Evelyn. "Neuronal circuits of experience-dependent plasticity in the primary visual cortex." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31234.

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Abstract (sommario):
Our ability to learn relies on the potential of neuronal networks to change through experience. The primary visual cortex (V1) has become a popular system for studying how experience shapes cortical neuronal networks. Experience-dependent plasticity in V1 has been extensively studied in young animals, revealing that experiences in early postnatal life substantially shape neuronal activity in the developing cortex. In contrast, less is known about how experiences modify the representation of visual stimuli in the adult brain. In addition, adult experience-dependent plasticity remains largely un
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22

Sawatari, Atomu. "Specificity and diversity of local connections in Macaque primary visual cortex /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1999. http://wwwlib.umi.com/cr/ucsd/fullcit?p9945775.

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23

Zhu, Mengchen. "Sparse coding models of neural response in the primary visual cortex." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53868.

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Abstract (sommario):
Sparse coding is an influential unsupervised learning approach proposed as a theoretical model of the encoding process in the primary visual cortex (V1). While sparse coding has been successful in explaining classical receptive field properties of simple cells, it was unclear whether it can account for more complex response properties in a variety of cell types. In this dissertation, we demonstrate that sparse coding and its variants are consistent with key aspects of neural response in V1, including many contextual and nonlinear effects, a number of inhibitory interneuron properties, as wel
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24

Bauer, Ute. "Computational models of neural circuitry in the macaque monkey primary visual cortex." [S.l.] : [s.n.], 1998. http://deposit.ddb.de/cgi-bin/dokserv?idn=956186947.

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25

Çürüklü, Baran. "Layout and function of the intracortical connections within the primary visual cortex /." Västerås : Mälardalen University, 2003. http://www.mrtc.mdh.se/publications/0604.pdf.

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26

Mao, Yuting. "The Reorganization of Primary Auditory Cortex by Invasion of Ectopic Visual Inputs." Digital Archive @ GSU, 2012. http://digitalarchive.gsu.edu/biology_diss/112.

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Brain injury is a serious clinical problem. The success of recovery from brain injury involves functional compensation in the affected brain area. We are interested in general mechanisms that underlie compensatory plasticity after brain damage, particularly when multiple brain areas or multiple modalities are included. In this thesis, I studied the function of auditory cortex after recovery from neonatal midbrain damage as a model system that resembles patients with brain damage or sensory dysfunction. I addressed maladaptive changes of auditory cortex after invasion by ectopic visual inputs.
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27

Wilson, Edward. "Investigating signal cascades promoting activity-dependent neuroplasticity in monkey primary visual cortex." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106492.

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Abstract (sommario):
The primate visual system represents an ideal model for the study of neural development and activity-dependent neuroplasticity. The final disposition of the visual cortex is based on a genetically determined cellular organization programmed to become influenced by the animal's environment during a critical period in early postnatal development. Thus neural connections are shaped by the sensory experience of the animal. This plasticity of the visual system declines after the closure of the critical window, and while plasticity is still present in mature animals, its strength is greatly diminish
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28

Law, Judith S. "Modeling the development of organization for orientation preference in primary visual cortex." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/3935.

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Abstract (sommario):
The cerebral cortex of mammals comprises a series of topographic maps, forming sensory and motor areas such as those in the visual, auditory, and somatosensory systems. Understanding the rules that govern the development of these maps and how this topographic organization relates to information processing is critical for the understanding of cortical processing and whole brain function. Previous computational models have shown that topographic maps can develop through a process of self-organization, if spatially localized patches of cortical neurons are activated by particular stimuli. This th
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29

Chirimuuta, Mazviita. "A psychophysical and computational study of contrast coding in primary visual cortex." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615802.

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30

Gajowa, Marta. "Synaptic and cellular mechanisms underlying functional responses in mouse primary visual cortex." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCB125.

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L'élaboration de l'information dans le cerveau est basée sur les propriétés des neurones qui analysent leurs inputs et génèrent les potentiels d'actions, ainsi que sur un réseau synaptique d'une complexité beaucoup plus importante que ce que l'homme peut créer. Mon projet consiste à étudier ces éléments dans le cortex visuel de la souris, pour décrire comment ils permettent aux neurones de répondre à des caractéristiques du scène visuelle. Je développe des outils optogénétiques pour pouvoir stimuler des neurones individuels in vivo, ce qui va ensuite être intégré avec des mesures de leur répon
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31

Ball, Christopher Edward. "Modeling the emergence of perceptual color space in the primary visual cortex." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/11694.

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Abstract (sommario):
Humans’ perceptual experience of color is very different from what one might expect, given the light reaching the eye. Identical patterns of light are often perceived as different colors, and different patterns of light are often perceived as the same color. Even more strikingly, our perceptual experience is that hues are arranged circularly (with red similar to violet), even though single-wavelength lights giving rise to perceptions of red and violet are at opposite ends of the wavelength spectrum. The goal of this thesis is to understand how perceptual color space arises in the brain, focusi
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32

Hattori, Ryoma. "Neural Mechanisms Underlying the Establishment of Unimodality in Mouse Primary Visual Cortex." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:26718754.

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Abstract (sommario):
Early visual cortex, an area classically defined as a purely unisensory cortex, has been suggested to be influenced by non-visual sensory inputs (Wallace et al., 2004; Iurilli et al., 2011; Vasconcelos et al., 2011; Charbonneau et al., 2012; Liang et al., 2013) and the cross-modal effects are enhanced after blindness (Bavelier, D. & Neville, 2002; Pascual-Leone et al., 2005). Although ectopic or increased neural projections from non-visual sensory areas might be partly responsible for the enhanced cross-modality after blindness in some cases (Karlen et al., 2006), such mechanism cannot explain
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33

Golledge, Huw D. R. "Does inter-columnar neuronal synchrony play a role in visual feature binding?" Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323355.

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34

Bowlsby, Stephen. "Glutathione as a neurotransmitter in primary visual cortex : binding sites and neuronal uptake." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/29776.

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Understanding the response properties and plasticity of primary visual (striate) cortex depends on the determination of its "chemical circuitry", yet the neurotransmitters that mediate sensory input to striate cortex are not known, and such evidence as exists is contradictory. The geniculpstriate input bears a similarity to glutamatergic neurotransmission, but glutamate is not a good candidate in this pathway. In contrast, glutathione (GSH) has been suggested to be one of the excitatory-amino-acid neurotransmitters in cortex (Ogita and Yoneda, 1987). Criteria for the identification of a neuro
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35

Berger, Denise [Verfasser]. "Intrinsic and functional aspects of neuronal synchrony in primary visual cortex / Denise Berger." Berlin : Freie Universität Berlin, 2009. http://d-nb.info/1023709279/34.

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36

Freeman, Tobe. "Mechanisms of binocular integration and their development in the cat primary visual cortex." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267925.

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37

Revina, Yulia. "Influence of scene surround on cortical feedback to non-stimulated primary visual cortex." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/8016/.

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Abstract (sommario):
Most of the time we are not passively viewing scenes but want to extract behaviourally relevant information. In addition, objects do not often occur in isolation outside the visual scientist’s laboratory but are embedded in complex visual scenes. If the brain is to be adaptive, it needs to process visual information with regards to its context. Thus perception is not purely determined by the specific input to the retina but depends on the surrounding scene, objects, attention, memory, prior knowledge, expectations and predictions. Traditionally, the visual system in the human brain has been vi
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38

Briggs, Farran. "Local circuitry and function of deep layer neurons in monkey primary visual cortex /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3077804.

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39

Baker, Pamela Mary. "The contribution of cortical microcircuitry to stimulus masking effects in cat primary visual cortex /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17615.

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40

Bartsch, Armin P. "Orientation maps in primary visual cortex a Hebbian model of intracortical and geniculocortical plasticity /." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=962125733.

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41

Cossell, L. "Functional organization and development of connectivity in L2/3 of mouse primary visual cortex." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1435416/.

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Abstract (sommario):
It is a fundamental goal of neuroscience to understand how feature-selective sensory response properties of cortical neurons emerge from the highly structured synaptic organization of the cortex. This thesis describes the receptive field (RF) organization in L2/3 of mouse primary visual cortex (V1) and the highly specific local circuits from which this organization emerges. We also examine how this connection specificity arises during development. We studied the organization of RFs in mouse V1 using in vivo two-photon calcium imaging. Local populations of neurons had a wide diversity of RFs, w
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42

Houlton, R. E. "Influence of adaptation on single neuron and population coding in mouse primary visual cortex." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1417573/.

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Abstract (sommario):
In the visual system, prolonged exposure to a high contrast stimulus leads to a decrease in neuronal responsiveness, referred to as contrast adaptation. Contrast adaptation has been extensively studied in carnivores and primates, but has so far received little attention in mice. This thesis explores contrast adaptation and its mechanisms in mouse primary visual cortex (V1). Using extracellular tetrode recordings in mouse V1, I found contrast adaptation to be orientation unspecific. While this finding differs from reports in carnivores and primates, it is consistent with the notion that respons
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43

Zeitler, Leo Laurenz. "Functional and Dynamical Consequences of Long-Range Patchy Connections in the Primary Visual Cortex." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279584.

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Abstract (sommario):
While it is a known fact that higher mammals develop a differently structured primary visual cortex than rodents, the reason for this phenomenon remains unknown. Eutherian species that rely primarily on vision establish long-range patchy connections between locally clustered neurons. The V1 of rats and mice which use odour as their primary sensory input do not possess such a structural organisation and wiring profile. Albeit existing studies investigating the functional properties of networks with distal patchy connections, the dynamical consequences are still unclear. We hypothesised that the
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44

Keemink, Sander Wessel. "Coding of multivariate stimuli and contextual interactions in the visual cortex." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/28969.

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Abstract (sommario):
The primary visual cortex (V1) has long been considered the main low level visual analysis area of the brain. The classical view is of a feedfoward system functioning as an edge detector, in which each cell has a receptive field (RF) and a preferred orientation. Whilst intuitive, this view is not the whole story. Although stimuli outside a neuron’s RF do not result in an increased response by themselves, they do modulate a neuron’s response to what’s inside its RF. We will refer to such extra-RF effects as contextual modulation. Contextual modulation is thought to underlie several perceptual p
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45

Antolik, Jan. "Unified developmental model of maps, complex cells and surround modulation in the primary visual cortex." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/4875.

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Abstract (sommario):
For human and animal vision, the perception of local visual features can depend on the spatial arrangement of the surrounding visual stimuli. In the earliest stages of visual processing this phenomenon is called surround modulation, where the response of visually selective neurons is influenced by the response of neighboring neurons. Surround modulation has been implicated in numerous important perceptual phenomena, such as contour integration and figure-ground segregation. In cats, one of the major potential neural substrates for surround modulation are lateral connections between cortical ne
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Kim, Taekeun Ph D. Massachusetts Institute of Technology. "Understanding experience-dependent plasticity of cellular and network activity in the mouse primary visual cortex." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/132747.

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Thesis: Ph. D. in Neuroscience, Massachusetts Institute of Technology, Department of Brain and Cognitive Sciences, June, 2019<br>Cataloged from the PDF version of thesis. Vita.<br>Includes bibliographical references (pages 143-153).<br>Sensory experiences in daily life modulates corresponding primary sensory cortices and eventually alter our behavior in a befitting manner. One of the most impactful sensory modules is vision. Primary visual cortex (V1) in mammals is particularly malleable during a juvenile critical period, but this plasticity lasts even in adulthood. A representative form of vi
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Le, Bec Benoît. "Lateral connectivity : propagation of network belief and hallucinatory-like states in the primary visual cortex." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS509.

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Dans le cortex visuel primaire (V1), nous avons examiné l’impact fonctionnel de séquences de mouvement apparent centripète provenant de la périphérie lointaine et convergeant vers le champ récepteur de cellules corticales le long de leur axe d’orientation préféré. A haute vitesse saccadique, la congruence anisotrope de stimuli élémentaires composants un mouvement cohérent est cruciale dans la diffusion et l’intégration latérale d’information contextuelle. Au niveau électrophysiologique, ces résultats correspondent à une avance de latence et à un gain d’amplitude des réponses sous et supralimin
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Stimberg, Marcel [Verfasser], and Klaus [Akademischer Betreuer] Obermayer. "Computational models of contrast and orientation processing in primary visual cortex / Marcel Stimberg. Betreuer: Klaus Obermayer." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2011. http://d-nb.info/1016533322/34.

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49

Goodyear, Bradley Gordon. "fMRI of human primary visual cortex at submillimeter resolution, ocular dominance and contrast perception in amblyopia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0001/NQ42523.pdf.

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50

Hunt, Brendan Joel. "Synapse loss from the rhesus monkey primary visual cortex does not correlate with cognitive decline during aging." Thesis, Boston University, 2013. https://hdl.handle.net/2144/12122.

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Thesis (M.A.)--Boston University<br>The effect of age on synapses in the neuropil of layers 2/3 in primary visual cortex was determined in 12 rhesus monkeys of various ages (6-33 years old). All of the monkeys had been behaviorally tested. As determined using the size–frequency method, there is a decrease in the numerical density of symmetric, but not asymmetric, synapses with age. There is no significant correlation between the loss of symmetric synapse frequency and the cognitive impairment indices (CII) of the 12 behaviorally tested monkeys. This lack of correlation between synapse frequenc
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