Accession Number : AD0773895

Title :   A Study of Receptive Fields on Neurons of Cat's Visual Cortex as Filters of Spatial Frequency,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Glezer,V. D. ; Ivanov,V. A. ; Shcherbach,T. A.

Report Date : 14 JAN 1974

Pagination or Media Count : 21

Abstract : The striation of a stimulus passing across a complex or supercomplex receptive field of a cat's visual cortex (RFVC) defines the characteristics of the field's responses. For each RF (receptive field) an optimum stimulus which evokes a maximum response can be found. The more bands there are in the optimum stimulus, the smaller is the average width of bars and the intervals between them. The effective areas of the stimulus is independent of the number of bands it contains and is equal to 2.6 degrees on the average (in diameter). The column of neurons with identical orientation of the RFs contains fields in which optimum stimuli consist of a different number of bands. These data lead one to assume that the RFVC are narrow-band filters of spatial frequencies and perform a piecewise Fourier transform of the image. A network of such neurons will discern the boundary between textures.

Descriptors :   *Cerebral cortex, *Visual perception, *Nerves, Nervous system, Images, Vision, USSR, Translations

Subject Categories : Psychology
      Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE