Journal ArticleDOI
Functional organization of primate visual cortex revealed by high resolution optical imaging
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TLDR
A high spatial resolution optical imaging system was developed to visualize cerebral cortical activity in vivo and found no ocular dominance organization was seen, while regions of poor orientation tuning colocalized to every other cytochrome oxidase stripe.Abstract:
A high spatial resolution optical imaging system was developed to visualize cerebral cortical activity in vivo. This method is based on activity-dependent intrinsic signals and does not use voltage-sensitive dyes. Images of the living monkey striate (VI) and extrastriate (V2) visual cortex, taken during visual stimulation, were analyzed to yield maps of the distribution of cells with various functional properties. The cytochrome oxidase--rich blobs of V1 and the stripes of V2 were imaged in the living brain. In V2, no ocular dominance organization was seen, while regions of poor orientation tuning colocalized to every other cytochrome oxidase stripe. The orientation tuning of other regions of V2 appeared organized as modules that are larger and more uniform than those in V1.read more
Citations
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Distributed Hierarchical Processing in the Primate Cerebral Cortex
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Perceptual symbol systems.
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The Self-Organizing Map
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From sensation to cognition.
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On the proper treatment of connectionism
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References
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Journal ArticleDOI
Receptive fields, binocular interaction and functional architecture in the cat's visual cortex
David H. Hubel,Torsten N. Wiesel +1 more
TL;DR: This method is used to examine receptive fields of a more complex type and to make additional observations on binocular interaction and this approach is necessary in order to understand the behaviour of individual cells, but it fails to deal with the problem of the relationship of one cell to its neighbours.
Journal ArticleDOI
Modality and topographic properties of single neurons of cat's somatic sensory cortex.
TL;DR: Observations upon the modality and topographical attributes of single neurons of the first somatic sensory area of the cat’s cerebral cortex, the analogue of the cortex of the postcentral gyrus in the primate brain, support an hypothesis of the functional organization of this cortical area.
Journal ArticleDOI
Changes in the visual system of monocularly sutured or enucleated cats demonstrable with cytochrome oxidase histochemistry
TL;DR: The results indicated that the deprivation caused by monocular suture produced a decrease in the cytochrome oxidase staining of the binocular segment of the deprived geniculate laminae of kittens, leading to a significant decreases in the level of oxidative enzyme activity one to several synapses away.
Journal ArticleDOI
Psychophysical evidence for separate channels for the perception of form, color, movement, and depth
Livingstone,David H. Hubel +1 more
TL;DR: Psychophysical experiments on the interactions of color, form, depth, and movement in human perception are described, and it is attempted to correlate these aspects of visual perception with the different subdivisions of the visual system.
Journal ArticleDOI
Anatomy and physiology of a color system in the primate visual cortex.
TL;DR: The results suggest that a system involved in the processing of color information, especially color-spatial interactions, runs parallel to and separate from the orientation-specific system.
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