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Normalization of cell responses in cat striate cortexSimple cells in the striate cortex have been depicted as half-wave-rectified linear operators. Complex cells have been depicted as energy mechanisms, constructed from the squared sum of the outputs of quadrature pairs of linear operators. However, the linear/energy model falls short of a complete explanation of striate cell responses. In this paper, a modified version of the linear/energy model is presented in which striate cells mutually inhibit one another, effectively normalizing their responses with respect to stimulus contrast. This paper reviews experimental measurements of striate cell responses, and shows that the new model explains a significantly larger body of physiological data.
Document ID
19930044703
Document Type
Reprint (Version printed in journal)
Authors
Heeger, D. J. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 16, 2013
Publication Date
August 1, 1992
Publication Information
Publication: Visual Neuroscience
Volume: 9
Issue: 2
ISSN: 0952-5238
Subject Category
LIFE SCIENCES (GENERAL)
Distribution Limits
Public
Copyright
Other