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Toward a Unified Theory of Visual Area V4
It is proposed that the unifying function of V4 circuitry is to enable selective extraction of specific functional domain-based networks, whether it be by bottom-up specification of object features or by top-down attentionally driven selection. Expand
Cortical processing of a brightness illusion.
- A. Roe, Haidong D. Lu, C. Hung
- Physics, Medicine
- Proceedings of the National Academy of Sciences…
- 8 March 2005
The existence of cells in monkey visual cortex that respond to an "illusory" brightness suggests a segregation of contour and surface processing in early visual pathways and a hierarchy of brightness information processing from V1 to V2 in monkeys. Expand
Functional organization of color domains in V1 and V2 of macaque monkey revealed by optical imaging.
It is concluded that color and orientation-selective responses are preferentially located in distinct CO compartments in V1 and V2, and it is proposed that the term "blob" encompasses both the concept of "CO blob" and "color domain" in V 1. Expand
Sensitivity of LS neurons to optic flow stimuli
LS (lateral suprasylvian area) is an important area in the extrastriate visual cortex of the cat.The receptive fields of cells in LS are much larger than those of primary visual cortex. MostLS… Expand
Functional organization for color and orientation in macaque V4
Using intrinsic signal optical imaging methods in awake, behaving monkeys, it is found that different feature preferences are functionally organized in V4 and the presence of spatially biased distribution of featural representation in V 4 in the ventral visual pathway is indicated. Expand
A Motion Direction Map in Macaque V2
The presence of motion maps in V2 points to a newfound prominence of V2 in motion processing, for contributing to motion perception in the dorsal pathway and/or for motion cue-dependent form Perception in the ventral pathway. Expand
A Map for Horizontal Disparity in Monkey V2
It is shown that in the thick stripe compartments of the second visual area (V2), there is a clustered organization of Near cells and Far cells, and moreover, there are topographic maps for Near to Far disparities within V2. Expand
Optical imaging of contrast response in Macaque monkey V1 and V2.
It is suggested that, with respect to contrast encoding, thin stripes have a larger dynamic range than thick/pale stripes and further support a role for thin stripes in processing of brightness information. Expand
Rivalry-Like Neural Activity in Primary Visual Cortex in Anesthetized Monkeys
- Haoran Xu, Chao Han, +6 authors Haidong D. Lu
- Psychology, Medicine
- The Journal of Neuroscience
- 16 March 2016
It is shown that rivalry-like neural activity persisted in monkey V1 when the monkeys were anesthetized and viewed binocularly incongruent stimuli, indicating that low-level visual processes play a critical role in solving visual ambiguity such as binocular rivalry. Expand