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Gain, noise, and contrast sensitivity of linear visual neuronsContrast sensitivity is a measure of the ability of an observer to detect contrast signals of particular spatial and temporal frequencies. A formal definition of contrast sensitivity that can be applied to individual linear visual neurons is derived. A neuron is modeled by a contrast transfer function and its modulus, contrast gain, and by a noise power spectrum. The distributions of neural responses to signal and blank presentations are derived, and from these, a definition of contrast sensitivity is obtained. This formal definition may be used to relate the sensitivities of various populations of neurons, and to relate the sensitivities of neurons to that of the behaving animal.
Document ID
19900057808
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Watson, Andrew B.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Visual Neuroscience
Volume: 4
ISSN: 0952-5238
Subject Category
Aerospace Medicine
Accession Number
90A44863
Distribution Limits
Public
Copyright
Other

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