Visual receptive field. Medical search. Frequent questions

Here we show that feedback projections onto excitatory neurons in the mouse primary visual cortex generate a second receptive field that is driven by stimuli outside the ffRF. (nature.com)
Feedback inputs from higher visual areas have scattered receptive fields relative to their putative targets in the primary visual cortex, which enables the generation of the fbRF. (nature.com)
Hubel, D. H. & Wiesel, T. N. Receptive fields, binocular interaction and functional architecture in the cat's visual cortex. (nature.com)
This symposium will highlight current concepts of the organization of visual cortex and their relation to perception and plasticity. (visionsciences.org)
We will describe data-analysis techniques to reconstruct receptive field properties of neural populations, and extend them to visual field maps and clusters within human and macaque visual cortex. (visionsciences.org)
The link between visual cortex' organization, perception and plasticity is a fundamental part of vision science. (visionsciences.org)
We describe a method that reconstructs population receptive field (pRF) properties in human visual cortex using fMRI. (visionsciences.org)
Receptive fields of cells in the visual cortex are larger and have more-complex stimulus requirements than retinal ganglion cells or lateral geniculate nucleus cells. (vivu.tv)
In visual cortex, stimulation outside the classical receptive field can decrease neural activity and also decrease functional Magnetic Resonance Imaging (fMRI) signal amplitudes. (zotero.org)
Here, we demonstrate that this OFF temporal advantage is transferred to visual cortex and has a correlate in human perception. (zotero.org)
In this personal perspective, we discuss the ongoing struggle of visual models to catch up with the visual cortex, identify key reasons for the relatively rapid improvement of artificial systems and models, and identify open problems for computational vision in this domain. (zotero.org)
To test this idea, we studied single neurons in macaque monkey intermediate visual (area V4) and somatosensory (area SII) cortex, using matched shape stimuli. (zotero.org)
These parallel tuning patterns imply analogous shape coding mechanisms in intermediate visual and somatosensory cortex. (zotero.org)
In particular, the invariance of complex cell responses in primary visual cortex against small translations is commonly interpreted as a signature of an invariant coding strategy possibly originating from an unsupervised learning principle. (zotero.org)
In all, we suggest a computational theory for recurrent processing in the visual cortex in which the significance of local measurements is evaluated on the basis of a broader visual context that is represented in terms of contour code patterns. (zotero.org)
These findings suggest a link between face and word viewing behavior and the differential development of pRFs across visual cortex, potentially due to competition on foveal coverage. (princeton.edu)
By two-photon imaging guided cell-attached recordings, we characterized visual response and receptive field (RF) properties of SOM neurons and parvalbumin-expressing inhibitory (PV) neurons genetically labeled in the mouse primary visual cortex. (jneurosci.org)
using two-photon imaging guided cell-attached recordings in GAD67 -GFP knock-in transgenic mice, we examined the receptive field (RF) properties of inhibitory neurons in layer 2/3 of the primary visual cortex (V1). (jneurosci.org)
This project involved "translating" Nicholas V Swindale's 1996 paper "Visual cortex: Looking into a Klein bottle"[4] into an interactive format influence by Empirical Modelling. (warwick.ac.uk)
The paper is a brief description of the arrangement of some sight receptive neurons in "cell receptive fields" in the visual cortex of primates. (warwick.ac.uk)
Receptive fields of V1 simple cells in mammalian visual cortex are characterised as localized, oriented bandpass filters that respond to oriented contrast edges of a specific spatial scale in a particular area of the visual fields. (herts.ac.uk)
The Development of Receptive Field Tuning Properties in Mouse Binocular Primary Visual Cortex. (bvsalud.org)
The mouse primary visual cortex is a model system for understanding the relationship between cortical structure, function, and behavior (Seabrook et al. (bvsalud.org)
Human visual cortex does not represent the whole visual field with the same detail. (knaw.nl)
Thus, the early human visual cortex has a radially asymmetric representation of the visual field. (knaw.nl)
Following neonatal surgical manipulations, a specific population of retinal ganglion cells is induced to innervate the auditory thalamus and provides visual input to cells in auditory cortex (Sur et al. (elsevierpure.com)
1988). We have now examined in detail the visual response properties of single cells in primary auditory cortex (A1) of these rewired animals and compared the responses to those in primary visual cortex (V1) of normal animals. (elsevierpure.com)
The mammalian primary visual cortex is one of the most studied brain regions and we have a good understanding of the basic principles of information processing in the visual system. (uni-luebeck.de)
Since the operation principles in cortical regions are similar, and dysfunctions of some of these principle networks is thought to underlie several neurological and psychiatric diseases, it appears particularly fruitful to explore candidate mechanisms in the comparatively well-known visual cortex. (uni-luebeck.de)
A biologically plausible neural network model of the primate primary visual cortex. (uni-luebeck.de)
5. Gilbert CD: Laminar differences in receptive field properties of cells in cat primary visual cortex. (uni-luebeck.de)
Receptive field properties of single neurons in rat primary visual cortex. (uni-luebeck.de)
Here, using functional magnetic resonance imaging, we combine detailed mapping of both population receptive fields (pRF) and category-selectivity, with independently acquired resting-state functional connectivity analyses, to examine scene and retinotopic processing within medial parietal cortex. (frontiersin.org)
The optic nerve projections to each visual cortex pass first to a 6-layered structure called the lateral geniculate nucleus (LGN), in a polysensory organ of the midbrain called the thalamus. (essayta.com)
A pioneering study in which microelectrodes were used to record extracellurarly responses of neurons in the primary visual cortex of anaesthetized cats. (wikibooks.org)
Receptive fields and functional architecture of monkey striate cortex. (wikibooks.org)
These areas overlap with recently-discovered, retinotopically-organized visual field maps (VFMs) spanning the IPS (IPS-0/1/2/3/4/5), and potentially maps in lateral occipital cortex, such as LO-1/2, and/or TO-1/2 (hMT+). (scirp.org)
Other fMRI studies have implicated early VFMs in posterior occipital cortex, suggesting that visual areas V1-hV4 are recruited to represent information in VWM. (scirp.org)
1991). Organization of visual inputs to the inferior temporal and posterior parietal cortex in macaques. (scirp.org)
Visual working memory capacity in retinotopic cortex: Number, resolution, and population receptive fields. (scirp.org)
Here, we examine these questions in macaque primary visual cortex (V1). (nature.com)
Biological visual mechanisms, from retina to cortex. (cam.ac.uk)
Neurons in higher processing areas of the brain (e.g., in primary visual cortex) have been shown to demonstrate variable spike timing in response to repetitions of identical stimuli ( Hubel and Wiesel, 1962 ). (frontiersin.org)
Understanding how the visual cortex learns to recognize objects is a critical issue in both Neuroscience and artificial intelligence. (springer.com)
In the primary visual cortex, visual stimulus properties within a specific location determine local synchronization strength, while the match of stimulus properties between distant locations controls long-range synchronization. (researchgate.net)
In the primary visual cortex (V1), pyramidal cells (PCs) integrate widely across space when signals are weak, but integrate narrowly when signals are strong, a phenomenon known as contrast-dependent surround suppression. (researchgate.net)
Population receptive field shapes in early visual cortex are nearly circular. (neurotree.org)
This paper presents a model of the mammalian primary visual cortex. (paulbourke.net)
The core proposition is the existence of two, topographically identical mappings of the visual field to the primary visual cortex, which define the geometrical organisation of orientation preference and drive the formation of patchy connectivity in the supragranular layers. (paulbourke.net)
The LGS model of the primary visual cortex suggests there is a direct relationship between globally represented objects (e.g. an oriented line) and various other response properties (e.g. orientation preference) which have a local geometry. (paulbourke.net)
Swindale (1996) has described a set of canonical properties which a model of the geometry of the primary visual cortex should take into account. (paulbourke.net)
Layer 4C of the macaque primary visual cortex has a strict retinotopic organisation (Blasdel and Fitzpatrick, 1984) . (paulbourke.net)
My research concerns the function and development of the primate visual system, especially the visual areas of the cerebral cortex. (nyu.edu)
The first concerns the functions of the visual areas of the primate cerebral cortex, with special emphasis on the roles of those areas in processing information about visual motion, form, and color. (nyu.edu)
Decoding the activity of neuronal populations in macaque primary visual cortex. (nyu.edu)
Origin and function of tuning diversity in macaque visual cortex. (nyu.edu)
Dissociation of choice formation and choice-correlated activity in macaque visual cortex. (nyu.edu)
Altered functional interactions between neurons in primary visual cortex of macaque monkeys with experimental amblyopia. (nyu.edu)
In the mid 1970s there had already been years of experimentation in visual cortex that led to two (sometimes controversial) conclusions. (scholarpedia.org)
The receptive field of this neuron is in the visual cortex. (coursehero.com)
Studies in macaque monkeys have demonstrated that 2 adjacent neurons in the visual cortex could join receptive fields up to 5°, which correlates to the maximum deviation of 8 prism diopters of monofixation syndrome. (medscape.com)
A new method termed XDream (E X tending D eepDream with r eal-time e volution for a ctivation m aximization) combined a generative neural network and a genetic algorithm in a closed loop to create strong stimuli for neurons in the macaque visual cortex. (plos.org)
Despite the progress made in understanding visual cortex by testing limited sets of hand-chosen stimuli, these experiments could be missing the true feature preferences of neurons. (plos.org)
Such images could lead us to revisit our current descriptions of feature tuning in visual cortex. (plos.org)
We therefore used optical fluorescence imaging to trace longitudinal calcium FC in the awake, resting-state mouse cortex in the same mice at 5 developmental time points beginning at postnatal day 15 (P15) and ending in early adulthood (P60), resulting in over 500 imaging epochs with both calcium and hemodynamics available as a resource for the field. (biorxiv.org)
Objective Several studies report evidence for training-related neuroplasticity in the visual cortex, while other studies suggest that improvements simply reflect inadequate eye fixation control during perimetric prediagnostics and postdiagnostics. (bmj.com)
The visual system includes the eyes, connecting pathways through to the visual cortex, and other parts of the brain (see the image below). (medscape.com)
From the LGN, the signals continue to the primary visual cortex, where further visual processing takes place. (medscape.com)
The eye has many features of a camera, beginning with the cornea and ending with the occipital (visual) cortex. (medscape.com)

Using non-invasive fMRI techniques, this method gives the possibility to examine assumptions about center-surround receptive fields in human subjects. (zotero.org)
The primary line of information transmission is from photoreceptor to bipolar cell to ganglion cell and then to the brain, but the amacrine and horizontal cells provide lateral transmission lines that can produce the complicated center-surround receptive fields of ganglion cells. (medscape.com)

In the visual system, these feedforward pathways define the classical feedforward receptive field (ffRF), the area in space in which visual stimuli excite a neuron 1 . (nature.com)
Receptive field, region in the sensory periphery within which stimuli can influence the electrical activity of sensory cells. (vivu.tv)
OFF-dominated cortical neurons in cats responded ∼3 ms faster to visual stimuli than ON-dominated cortical neurons, and dark-mediated suppression in ON-dominated neurons peaked ∼14 ms faster than light-mediated suppression in OFF-dominated neurons. (zotero.org)
The receptive field, defined as the spatiotemporal selectivity of neurons to sensory stimuli, is central to our understanding of the neuronal mechanisms of perception. (mpg.de)
These spatiotemporal dynamics may enhance information processing of relevant stimuli during the scanning of a visual scene, thereby assisting the selection of saccade targets and accelerating the analysis of the visual scene during free viewing. (mpg.de)
Further work will thus concentrate on exploring the parameter space of the network and learning rule, as well as the presentation statistics of the stimuli to support receptive field formation. (herts.ac.uk)
Neural activity was recorded in response to visual stimuli - testing receptive field size between two wild-type and two Syngap1 +/- mice. (iupui.edu)
Deficiencies in the Syngap1 protein may impair refinement of visual stimuli. (iupui.edu)
Consistent with mouse behavior, neural responses to the same stimuli recorded in mouse visual areas V1, RL, and LM also did not support texture-invariant segmentation of figures using opponent motion. (elifesciences.org)
Consider vision as a paradigmatic example, the selection of stimuli to probe neural activity has shaped the understanding of how visual neurons represent information. (plos.org)

We also demonstrate techniques to reveal extra-classical receptive field interactions similar to those seen in classical psychophysical "surround suppression" in both S-cone and achromatic pathways. (visionsciences.org)

Using fMRI and population receptive field (pRF) modeling in children and adults, we determine where and how pRFs develop across the ventral visual stream. (princeton.edu)
Although larger response magnitudes were reported for scenes presented contralaterally, fMRI adaptation was found not to depend on visual field position, indicating perhaps, the presence of receptive fields that span the vertical meridian ( MacEvoy and Epstein, 2007 ) and suggesting RSC plays a more prominent role in spatial memory rather than scene perception per se ( MacEvoy and Epstein, 2007 ). (frontiersin.org)

Each of the neurons in the various layers of the retina "covers" an area in your field of vision. (vivu.tv)
For any cell in the visual system, from the retina to the brain, there is an area out in the visual field that will produce a change in the response in that cell. (vivu.tv)
the receptive field of an RGC is the region of the retina occupied by the photoreceptors to which the RGC is connected. (vivu.tv)
What is the receptive field of the retina composed of? (vivu.tv)
For example, the receptive field of a ganglion cell in the retina of the eye is composed of input from all of the photoreceptors which synapse with it, and a group of ganglion cells in turn forms the receptive field for a cell in the brain. (vivu.tv)
The basic narrative of this book is "how vision works"-from the retina to the highest visual centers deep in the temporal lobe. (hachettebookgroup.com)
The central retina has small receptive fields and is therefore more sensitive to image blur or image disparity than the peripheral retina. (medscape.com)
2011 ) The light-induced reduction of horizontal cell receptive field size in the goldfish retina involves nitric oxide. (neurotree.org)
Visual processing and, ultimately, visual fields begin in the retina. (medscape.com)

Numerous studies suggest that the visual system uses both phase-and position-shift receptive field (RF) mechanisms for the processing of binocular disparity. (mit.edu)
In normal animals, visual cortical neurons are selective and binocular. (scholarpedia.org)

However, in the mammalian auditory system many aspects of this hierarchical organization remain undiscovered, including the prominent classes of high-level representations (that would be analogous to face selectivity in the visual system or selectivity to bird's own song in the bird) and the dominant types of invariant transformations. (zotero.org)
Like cells in normal V1, A1 cells in rewired animals exhibited orientation and direction selectivity and had simple and complex receptive field organizations. (elsevierpure.com)
We present the detailed network specifications and show simulations testing a variety of receptive field properties (e.g. orientation and direction selectivity, spatial and temporal tuning) of the neurons in our model. (uni-luebeck.de)
Adaptation-induced changes in the temporal-frequency tuning and direction selectivity of cat visual cortical cells were studied. (cambridge.org)
Visual and Vestibular Selectivity for Self-Motion in Macaque Posterior Parietal Area 7a. (rochester.edu)
The repeated visual exposure to the same faces, as the student starts attending college regularly, allows the occurrence of the shift in the selectivity. (coursehero.com)

it remains unclear to what extent the two species share more abstract representations of visual objects and scenes. (elifesciences.org)

Feedback projections may therefore enable neurons to use context to estimate information that is missing from the ffRF and to report differences in stimulus features across visual space, regardless of whether excitation occurs inside or outside the ffRF. (nature.com)
Next, we extend conventional stimulus-referred notions of the receptive field to neural-referred properties, i.e. cortico-cortical receptive fields that capture the information flow between visual field maps. (visionsciences.org)
This area in space where the presence of an appropriate stimulus will modify the activity of this neuron is called the receptive field of this neuron. (vivu.tv)
The concept of the receptive field is central to sensory neurobiology, because it provides a description of the location at which a sensory stimulus must be presented in order to elicit a response from a sensory cell. (vivu.tv)
The receptive field of an individual sensory neuron is the particular region of the sensory space (e.g., the body surface, or the visual field) in which a stimulus will modify the firing of that neuron. (vivu.tv)
The study identified several types of neuronal receptive fields and showed that cortical neurons are selective for stimulus orientation and binocularity. (wikibooks.org)
Le R, Gafni C, Ben-Shachar M, Wandell B . Stimulus dependence of population receptive fields within the visual field maps and the visual word form area Journal of Vision . (neurotree.org)

The stimulation of this feedback receptive field (fbRF) elicits responses that are slower and are delayed in comparison with those resulting from the stimulation of the ffRF. (nature.com)
At the smallest scale, the receptive field is a property of individual neurons and summarizes the region of the visual field where visual stimulation elicits a response. (visionsciences.org)
Cells in A1 of rewired animals differed from cells in normal V1: they exhibited larger receptive field sizes and poorer visual responsivity, and responded with longer latencies to electrical stimulation of their inputs. (elsevierpure.com)

Receptive fields are similar to those of ganglion cells, with an antagonistic center-surround system and cells that are either on- or off center. (vivu.tv)

Receptive fields and functional architecture in two non striate visual areas (18 and 19) of a cat. (springer.com)

Our results will hopefully aid further understanding of the mechanisms of receptive field emergence and efficient event-based vision in general. (herts.ac.uk)
We test the hypothesis that spatial processing mechanisms in the early visual system facilitate prediction by constructing neural representations that follow straighter temporal trajectories. (nature.com)
The aims of this course are to introduce the principles, models and applications of computer vision, as well as some mechanisms used in biological visual systems that may inspire design of artificial ones. (cam.ac.uk)
The rodent visual system has attracted great interest in recent years due to its experimental tractability, but the fundamental mechanisms used by the mouse to represent the visual world remain unclear. (elifesciences.org)
I am interested in how the brain encodes and decodes visual information, and in the mechanisms that put that information to use in the control of behavior. (nyu.edu)

In the model, neurons have spatially local classical receptive fields, are tuned to orientation, and receive information (from V1) about the location and orientation of borders. (zotero.org)
Since the local mapping of the supragranular layers produces a simultaneous expansion and contraction of the current visual inputs, it accounts for both the local response properties for orientation preference and their global geometric organisation. (paulbourke.net)
The mappings described allow those properties of the visual field which can be predicted on the basis of spatial contiguity (texture, orientation, colour, contrast) to be available as response properties over the entire visual field. (paulbourke.net)

The organization of the visual system can be described at different spatial scales. (visionsciences.org)
The aim of the present study was to characterize the spatial and temporal features of synaptic and discharge receptive fields (RFs), and to quantify their relationships, in cat area 17. (nih.gov)
We studied the spatial organization of directionally selective neurons in the cortical middle temporal visual area (area MT) of the Cebus monkey. (jneurosci.org)

Visual information is mediated by two major thalamic pathways that signal light decrements (OFF) and increments (ON) in visual scenes, the OFF pathway being faster than the ON. (zotero.org)
The aim of the study was to evaluate changes in the central visual pathways during the early and advanced stages of bilateral normal-tension glaucoma (NTG). (mdpi.com)

The receptive field encompasses the sensory receptors that feed into sensory neurons and thus includes specific receptors on a neuron as well as collectives of receptors that are capable of activating a neuron via synaptic connections. (vivu.tv)
Our goal is to develop a spiking network that employs event-based synaptic update rules to learn dynamic receptive fields. (herts.ac.uk)

PRF sizes increase with increasing eccentricity and up the visual hierarchy. (visionsciences.org)

What is the best definition of the receptive field of an afferent neuron? (vivu.tv)
Terms in this set (26) the best definition of the "receptive field" of an afferent neuron. (vivu.tv)
What is the receptive field of a sensory neuron? (vivu.tv)
4] our model is based on more detailed single neuron models and was designed to include a broader variety of receptive field properties. (uni-luebeck.de)
Receptive field area for each neuron was then calculated and compared between the two genotypes. (iupui.edu)

2011). Temporal dynamics of encoding, storage, and reallocation of visual working memory. (scirp.org)
Visual input typically evolves along complex temporal trajectories that are difficult to extrapolate. (nature.com)
We hypothesize that the visual system transforms its input into a representation that follows a "straighter" trajectory through time (the temporal straightening hypothesis 6 ). (nature.com)
Testing the temporal straightening hypothesis requires comparing the straightness (conversely, curvature) of the trajectory of a sequence of images in the pixel domain with that of the visual system's internal representation. (nature.com)

Bring mindfulness to your sensory experience by exploring your visual field. (mindful.org)

Therefore, we have built a detailed biologically plausible model that unifies as many aspects of early visual processing as possible, with a focus on receptive field properties of single neurons. (uni-luebeck.de)

Our results suggest that the cortical OFF pathway is faster than the ON pathway at increasing and suppressing visual responses, and these differences have parallels in the human visual perception of lights and darks. (zotero.org)
Research has shown that Syngap1 +/- mice have decreased cortical gray matter brain volume throughout areas involved in the visual system pathway. (iupui.edu)
A right visual field cut commonly accompanies Wernicke aphasia because the visual pathway is near the affected area. (msdmanuals.com)

Receptive field subregions: The area within the receptive field is subdivided into two regions, center and surround. (vivu.tv)
Concomitant electrophysiological recordings from V2 indicate that groups of cells having similar receptive field properties are clustered within the subregions defined by these anatomical techniques. (wustl.edu)

We describe the way these receptive field properties vary within and across different visual field maps. (visionsciences.org)
Furthermore, we will consider how these neural properties change with the state of chronic visual deprivation due to damage to the visual system, and in subjects with severely altered visual input due to prism-adaptation. (visionsciences.org)
Various models have been proposed to explain the response properties of complex cells using a sparsity or a slowness criterion and it has been concluded that physiologically plausible receptive field properties can be derived from either criterion. (zotero.org)
Here, we show that the effect of the two objectives on the resulting receptive field properties is in fact very different. (zotero.org)
Here we report that pRF properties in visual field maps, from the first visual area, V1, through the first ventro-occipital area, VO1, are adult-like by age 5. (princeton.edu)
Deyoe, EA & Van Essen, DC 1985, ' Segregation of efferent connections and receptive field properties in visual area V2 of the Macaque ', Nature , vol. 317, no. 6032, pp. 58-61. (wustl.edu)
An extensive comparison with receptive field properties of real neurons [5,6] is also given. (uni-luebeck.de)
Visual response properties of V1 neurons projecting to V2 in macaque. (nyu.edu)
These properties depend on the visual experience of the animal. (scholarpedia.org)

Together, these findings establish that the early visual system processes its inputs using a set of specialized computations that can support perceptual prediction in the natural environment. (nature.com)

PRF sizes increase between visual areas and with eccentricity, but when expressed in V1 cortical surface area (i.e., cortico-cortical pRFs), they are constant across eccentricity in V2 and V3. (visionsciences.org)
I use a model of V2 to show that this visual area is able to generate the ownership signal by itself, without requiring any top-down mechanism or external explicit labels for figures, T junctions, or corners. (zotero.org)
Here, we map the receptive fields of macaque area V4 neurons during saccadic eye movements and find that receptive fields are remarkably dynamic. (mpg.de)
V2 is a visual area of the macaque monkey which is at the second level in a recently proposed hierarchy of cortical visual areas 1 . (wustl.edu)
Syngap1 +/- mice had a mean receptive field area of 450.5 visual degrees (±443.7) and WT mice had a mean receptive field area of 261.1 visual degrees (±187.21). (iupui.edu)
A functional and perceptual signature of the second visual area in primates. (nyu.edu)
Visual or tactile input to the shaded area causes a hand-centered cell in the parietal lobe to fire. (dericbownds.net)

What is a receptive field in the visual system? (vivu.tv)
Receptive fields have been identified for neurons of the auditory system, the somatosensory system, and the visual system. (vivu.tv)
Antagonistic center-surround configurations are a central organizational principle of our visual system. (zotero.org)
Receptive fields (RFs) processing information in restricted parts of the visual field are a key property of visual system neurons. (princeton.edu)
Measurement method of visual system neurons receptive fields pass band by measuring light flickers period with subsequent frequency calculation is proposed. (rudn.ru)
Building computational models is a crucial step in exploring how the visual system computes and in understanding how neuropsychiatric diseases affect these computations. (uni-luebeck.de)
Electroencephalogram (EEG) studies using the Contralateral Delay Activity (CDA) paradigm have revealed that cortical representations of VWM are at a minimum loosely organized like the primary visual system, such that the left side of space is represented in the right hemisphere, and vice versa. (scirp.org)
Together, our findings reveal that the early visual system uses a set of specialized computations to build representations that can support prediction in the natural environment. (nature.com)
We previously developed a method for estimating the curvature of perceptual representations of video sequences and used it to demonstrate that the human visual system selectively straightens natural videos 6 . (nature.com)
Our analysis revealed that the early visual system transforms the frames of natural videos so as to straighten their V1 population trajectories. (nature.com)
reciprocal feedback through the visual system. (cam.ac.uk)
There is abundant evidence for differences in the organization of the visual system between primates and rodents. (elifesciences.org)
Both these transforms are mappings of the hemi-retinal image, and are achieved by known connectivity in the visual system. (paulbourke.net)
The second concerns the functional development of the cortical visual system, and on the way that development is affected by forms of abnormal early visual experience that produce a visual system disorder known as amblyopia . (nyu.edu)
Amblyopia is commonly associated, which is a failure of normal neural development in the visual system leading to poor vision. (medscape.com)

There are two primary types of ganglion cell receptive fields: ON center/OFF surround cell: Flashing small bright spot in the center subregion increases the cell's response. (vivu.tv)

What is the difference between retinal ganglion and receptive fields? (vivu.tv)
Simulation of visual perception and learning with a retinal prosthesis. (neurotree.org)

Recently, we demonstrated differential retinotopic biases for the contralateral lower and upper visual fields within OPA and PPA, respectively. (frontiersin.org)
The function of the LGS mapping is to provide each point in the retinotopic image with a representation of the entire visual hemi-field. (paulbourke.net)
Each retinotopic point is able to learn a `snapshot' of points in the visual image whose activity tends to coincide with that retinotopic point. (paulbourke.net)

These responses are preferentially reduced by anaesthesia and by silencing higher visual areas. (nature.com)
Despite the overall increase in firing, by 6 weeks, thalamocortical neurons display degraded receptive fields, with decreased responses to adjacent whiskers. (cdc.gov)

Author SummaryA key question in visual neuroscience is how neural representations achieve invariance against appearance changes of objects. (zotero.org)

In particular, using a quantitative behavioural assay combined with computational modelling, we find that males use fast modulations in visual and self-motion signals to pattern their songs, a relationship that we show is evolutionarily conserved. (zotero.org)
I am particularly interested in the relationships between visual signals in these areas, and the perceptual decisions and motor activity they support. (nyu.edu)

Moreover, differences in pRF size and CMF vary gradually with polar angle and are not limited to the meridians or visual field map discontinuities. (knaw.nl)

These findings reveal a fundamental limitation in the ability of mice to segment visual objects compared to primates. (elifesciences.org)
The authors show a major difference in the ability of mice and primates in detecting figures from ground based on motion and texture patterns, revealing a fundamental limitations of mice in segmenting visual scenes. (elifesciences.org)

This comparison uses the understanding that came from the development of models on visual perception and optical illusions as part of the modelling study. (warwick.ac.uk)

However, the computational processes within a visual field map do not have to coincide with perceptual qualities. (visionsciences.org)
Conceptually, much of this research draws on related work in visual psychophysics, and on computational approaches to understanding brain organization and visual processing. (nyu.edu)

Patients cannot comprehend words or recognize auditory, visual, or tactile symbols. (msdmanuals.com)

Although some cells clearly showed a preference to certain orientations and angles, no clear pattern has yet emerged that would demonstrate learning of V1-like receptive fields (Fig. 1). (herts.ac.uk)

Ultimately, the network will ideally learn V1-like receptive fields from long exposure to DVS recordings. (herts.ac.uk)

In these visual field maps, we find smaller pRFs and larger CMFs in horizontal (left and right) than vertical (upper and lower) visual field quadrants. (knaw.nl)

This notion relates the visual field maps to the idea of functional specialization, i.e. separate cortical regions are involved in different processes. (visionsciences.org)
Indeed most perceptual functions are associated with multiple visual field maps and even multiple cortical regions. (visionsciences.org)

Anatomy72

Organisms29

Diseases12

Chemicals and Drugs8

Analytical, Diagnostic and Therapeutic Techniques and Equipment37

Psychiatry and Psychology54

Phenomena and Processes60

Disciplines and Occupations3

Information Science8

Named Groups1

Health Care8

Cortex69

Center-surround receptive fields2

Stimuli10

Extra-classical receptive field1

FMRI2

Retina9

Binocular2

Selectivity6

Abstract1

Stimulus7

Stimulation3

Ganglion cells1

Functional architecture1

Mechanisms5

Orientation3

Spatial3

Pathways2

Synaptic2

Increase with increasing e1

Neuron5

Temporal4

Sensory1

Single neurons1

Pathway3

Subregions2

Properties9

Inputs1

Area7

System15

Primary1

Retinal2

Retinotopic3

Responses2

Representations1

Signals2

Differences1

Primates2

Perception1

Computational2

Auditory1

Demonstrate1

Ultimately1

Horizontal1

Cortical regions2