Structure of a complex receptive field in the cat visual cortex

1982 ◽  
Vol 14 (1) ◽  
pp. 14-19
Author(s):  
V. D. Glezer ◽  
T. A. Shcherbach ◽  
V. E. Gauzel'man ◽  
V. M. Bondarko
Neuron ◽  
2001 ◽  
Vol 30 (1) ◽  
pp. 263-274 ◽  
Author(s):  
Ilan Lampl ◽  
Jeffrey S. Anderson ◽  
Deda C. Gillespie ◽  
David Ferster

1983 ◽  
Vol 14 (6) ◽  
pp. 455-462
Author(s):  
I. A. Shevelev ◽  
G. A. Sharaev ◽  
M. A. Volgushev ◽  
M. F. Pyshnyi ◽  
N. N. Verderevskaya

1994 ◽  
Vol 11 (5) ◽  
pp. 953-977 ◽  
Author(s):  
M. Kitano ◽  
K. Niiyama ◽  
T. Kasamatsu ◽  
E. E. Sutter ◽  
A. M. Norcia

AbstractTwo types of field potentials were identified in cat visual cortex using contrast reversal of oriented bar gratings: a short-latency fast-local component with a retinotopic organization similar to that seen with single-unit discharges at the same cortical site, and a slow, nonretinotopic component with a longer peak latency. The slow-distributed component had an extensive receptive field mapped by measuring the amplitude of binary kernels and showed strong inhibitory interactions within the receptive field. The peak latency of the slow-local component increased with distance from the retinotopic center, suggesting a possible conduction delay. Both components showed some orientation bias depending on the laminar location, but the bias could be independent of the orientation preferred by single units in the immediate vicinity. The present findings indicate that locally generated field potentials reflect cortical mechanisms for nonlinear integration over wide areas of the visual field.


Receptive fields of simple cells in the cat visual cortex have recently been discussed in relation to the ‘theory of communication' proposed by Gabor (1946). A number of investigators have suggested that the line-weighting functions, as measured orthogonal to the preferred orientation, may be best described as the product of a Gaussian envelope and a sinusoid (i.e. a Gabor function). Following Gabor’s theory of ‘basis’ functions, it has also been suggested that simple cells can be categorized into even-and odd-symmetric categories. Based on the receptive field profiles of 46 simple cells recorded from cat visual cortex, our analysis provides a quantitative description of both the receptive-field envelope and the receptive-field ‘symmetry’ of each of the 46 cells. The results support the notion that, to a first approximation, Gabor functions with three free parameters (envelope width, carrier frequency and carrier phase) provide a good description of the receptive-field profiles. However, our analysis does not support the notion that simple cells generally fit into even- and odd-symmetric categories.


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