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Human contrast discrimination and the threshold of cortical neurons.

Abstract:

The human contrast-discrimination function has a curious shape: In addition to rising for increasing contrasts, both positive and negative, it also rises for very low contrasts on either side of zero. It is shown that this rise near zero contrast is not much affected by procedures that increase or decrease the subject's knowledge of the stimulus; this counts against uncertainty as the immediate cause of the elevation near zero contrast. The alternative explanation in terms of a genuine respon...

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Publication status:
Published

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Publisher copy:
10.1364/josaa.4.002366

Authors


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Institution:
University of Oxford
Department:
Oxford, MSD, Physiology Anatomy and Genetics
Role:
Author
Journal:
Journal of the Optical Society of America. A, Optics and image science
Volume:
4
Issue:
12
Pages:
2366-2371
Publication date:
1987-12-05
DOI:
EISSN:
1520-8532
ISSN:
0740-3232
URN:
uuid:16510bca-f0bb-4068-a9e8-31fbc968b7ca
Source identifiers:
115021
Local pid:
pubs:115021

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