Spatial invariance of visual receptive fields in parietal cortex neurons

Article Abstract:

In retinal coordinates, spatial information is conveyed to the primary visual cortex, however movement trajectory programming needs a transformation into a suitable frame for the selected part of the body. Visual information thus needs to be combined with information from other areas. A subdivision of the monkey parietal lobe showed that visual neuron activty in the ventral intraparietal area (VIP), is controlled by eye-position signals. VIP neurons encode the azimuth and visual stimulus elevation, independently of the way in which the eyes are looking.

Physiological aspects, Neurons

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Lack of long-term cortical reorganization after macaque retinal lesions

Article Abstract:

Adult macaque primary visual cortex (V1) undergoes large-scale reorganization within a few months after retinal lesioning. An attempt is made to show that adult macaque V1 does not approach normal responsivity during 7.5 months of follow-up after retinal lesions, and its topography does not change.

United States, Science & research, Health aspects, Macaques, Electrophysiology

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