Spatial resolution and contrast sensitivity of single neurons in area 19 of split-chiasm cats: a comparison with primary visual cortex
Details
Serval ID
serval:BIB_5BFF8E23895A
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Spatial resolution and contrast sensitivity of single neurons in area 19 of split-chiasm cats: a comparison with primary visual cortex
Journal
European Journal of Neuroscience
ISSN
0953-816X (Print)
Publication state
Published
Issued date
09/1997
Volume
9
Number
9
Pages
1929-39
Notes
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Sep
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Sep
Abstract
Electrophysiological recordings were carried out in the callosal recipient zone of area 19 in normal and split-chiasm cats and, for comparison purposes, at the border of areas 17 and 18 of split-chiasm cats. The influences of retinothalamic and callosal inputs on a single cortical neurons were thereby evaluated. Extracellular recordings of single cells were made in anaesthetized and paralysed cats in the zone representing the central visual field. Receptive field properties were assessed using sine wave gratings drifting in optimal directions. Results showed that in area 19 and areas 17/18 one-third of the cells were binocularly driven after section of the optic chiasm. In area 19, the spatial resolution and contrast sensitivity of cells driven via the dominant eye were similar in the normal and split-chiasm groups. In areas 17/18 and area 19 of split-chiasm cats, binocular cells showed significant interocular matching of their receptive field properties (spatial resolution and contrast threshold), although small differences were observed. These small interocular differences were related to the cell's ocular dominance rather than to the signal transmission route (thalamic or callosal).
Keywords
Animals
Brain Mapping/*methods
Cats
*Contrast Sensitivity
Corpus Callosum/cytology/*physiology
Dominance, Cerebral/physiology
Female
Linear Models
Male
Neurons/*physiology
Optic Chiasm/cytology/*physiology
Thalamus/physiology
Visual Cortex/cytology/*physiology
Visual Fields/physiology
Visual Pathways/physiology
Pubmed
Web of science
Create date
25/01/2008 12:34
Last modification date
20/08/2019 15:14