The proposed model holds that, at its most fundamental level, visual awareness is quantized. That is to say that visual awareness arises as individual bits of awareness through the action of neural circuits with hundreds to thousands of neurons in at ...
W Alexander Escobar
doaj +1 more source
Color contrast processing in human striate cortex [PDF]
Color constancy refers to the unchanging nature of the perceived color of an object despite considerable variation in the wavelength composition of the light illuminating it. The color contrasts between objects and their backgrounds play a crucial role in color constancy.
Kentridge, R, Heywood, C, Weiskrantz, L
openaire +4 more sources
Temporal Precision of Spike Trains in Extrastriate Cortex of the Behaving Macaque Monkey [PDF]
How reliably do action potentials in cortical neurons encode information about a visual stimulus? Most physiological studies do not weigh the occurrences of particular action potentials as significant but treat them only as reflections of average ...
Bair, Wyeth, Koch, Christof
core +2 more sources
Exploring the physiological correlates of chronic mild traumatic brain injury symptoms
We report on the results of a multimodal imaging study involving behavioral assessments, evoked and resting-state BOLD fMRI, and DTI in chronic mTBI subjects.
Serguei V. Astafiev+3 more
doaj +1 more source
Design principles of columnar organization in visual cortex [PDF]
Visual space is represented by cortical cells in an orderly manner. Only little variation in the cell behavior is found with changing depth below the cortical surface, that is, all cells in a column with axis perpendicular to the cortical plane have ...
Niebur, Ernst, Wörgötter, Florentin
core
Declined contrast sensitivity of neurons along the visual pathway in aging cats
Changes in the visual cortex appear to mediate much of the visual degradation during normal aging. However, how aging affects different stages along the visual pathway is unclear.
Zhengchun eWang+6 more
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Binding of Object Representations by Synchronous Cortical Dynamics Explains Temporal Order and Spatial Pooling Data [PDF]
A key problem in cognitive science concerns how the brain binds together parts of an object into a coherent visual object representation. One difficulty that this binding process needs to overcome is that different parts of an object may be processed by ...
Grossberg, Stephen, Gruenwald, Alexander
core +2 more sources
Psychophysical evidence for two routes to suppression before binocular summation of signals in human vision [PDF]
Visual mechanisms in primary visual cortex are suppressed by the superposition of gratings perpendicular to their preferred orientations. A clear picture of this process is needed to (i) inform functional architecture of image-processing models, (ii ...
Baker, D.H., Meese, T.S., Summers, R.J.
core +2 more sources
An Analysis of Simian Sulcus and Calcarine Fissure Morphometry
Background: Restoration of vision for blind by use of cortical visual prosthesis (CVP) is a new path-breaking finding. The striate cortex lodges calcarine fissure and simian sulcus. Brodmann’s area 17, 18, and 19 are the visual areas. Variations are seen
Amol Ashok Shinde+2 more
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Early recurrent feedback facilitates visual object recognition under challenging conditions
Standard models of the visual object recognition pathway hold that a largely feedforward process from the retina through inferotemporal cortex leads to object identification.
Dean eWyatte+2 more
doaj +1 more source