Results 91 to 100 of about 494,197 (285)

Sparse coding in striate and extrastriate visual cortex

open access: yesJournal of Neurophysiology, 2011
Theoretical studies of mammalian cortex argue that efficient neural codes should be sparse. However, theoretical and experimental studies have used different definitions of the term “sparse” leading to three assumptions about the nature of sparse codes. First, codes that have high lifetime sparseness require few action potentials.
Willmore, B, Mazer, J, Gallant, J
openaire   +4 more sources

Reorganization of retinotopic maps after occipital lobe infarction [PDF]

open access: yes, 2014
Published in final edited form as: J Cogn Neurosci. 2014 June ; 26(6): 1266–1282. doi:10.1162/jocn_a_00538.We studied patient JS, who had a right occipital infarct that encroached on visual areas V1, V2v, and VP. When tested psychophysically, he was very
Buonanno, Ferdinando   +5 more
core   +1 more source

Relationship between intrinsic connections and functional architecture revealed by optical imaging and in vivo targeted biocytin injections in primate striate cortex.

open access: yesProceedings of the National Academy of Sciences of the United States of America, 1993
In primate primary visual cortex, neurons sharing similar response properties are clustered together forming functional domains that appear as a mosaic of patches or bands, often traversing the entire cortical depth from the pia to the white matter ...
R. Malach   +3 more
semanticscholar   +1 more source

A Neural Model of How Horizontal and Interlaminar Connections of Visual Cortex Develop into Adult Circuits that Carry Out Perceptual Grouping and Learning [PDF]

open access: yes, 2000
A neural model suggests how horizontal and interlaminar connections in visual cortical areas Vl and V2 develop within a laminar cortical architecture and give rise to adult visual percepts.
Grossberg, Stephen, Williamson, James
core   +1 more source

Functional representation of vision within the mind: A visual consciousness model based in 3D default space [PDF]

open access: yes, 2015
The human eyes and brain, which have finite boundaries, create a ‘‘virtual’’ space within our central nervous system that interprets and perceives a space that appears boundless and infinite.
Barnes, Vernon A.   +2 more
core  

fMRI evidence that precision ophthalmic tints reduce cortical hyperactivation in migraine [PDF]

open access: yes, 2011
Background: Certain patterns can induce perceptual illusions/distortions and visual discomfort in most people, headaches in patients with migraine, and seizures in patients with photosensitive epilepsy.
Bozoki, Andrea   +5 more
core   +1 more source

Object repetition leads to local increases in the temporal coordination of neural responses

open access: yesFrontiers in Human Neuroscience, 2010
Experience with visual objects leads to later improvements in identification speed and accuracy (repetition priming), but generally leads to reductions in neural activity in single-cell recording studies in animals and fMRI studies in humans.
Jessica R Gilbert   +3 more
doaj   +1 more source

New evidence of visual space anisotropy with autostereograms [PDF]

open access: yes, 2014
Postprint (published ...
Aznar-Casanova, J. Antonio   +4 more
core   +2 more sources

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