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Titolo:
HUMAN LUMINANCE PATTERN-VISION MECHANISMS - MASKING EXPERIMENTS REQUIRE A NEW MODEL
Autore:
FOLEY JM;
Indirizzi:
UNIV CALIF SANTA BARBARA,DEPT PSYCHOL SANTA BARBARA CA 93106
Titolo Testata:
Journal of the Optical Society of America. A, Optics, image science,and vision.
fascicolo: 6, volume: 11, anno: 1994,
pagine: 1710 - 1719
SICI:
1084-7529(1994)11:6<1710:HLPM-M>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
CAT STRIATE CORTEX; SPATIAL-FREQUENCY; CONTRAST MASKING; NEURAL DYNAMICS; ADAPTATION; CELLS; DISCRIMINATION; ORIENTATIONS; SELECTIVITY; INHIBITION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
45
Recensione:
Indirizzi per estratti:
Citazione:
J.M. Foley, "HUMAN LUMINANCE PATTERN-VISION MECHANISMS - MASKING EXPERIMENTS REQUIRE A NEW MODEL", Journal of the Optical Society of America. A, Optics, image science,and vision., 11(6), 1994, pp. 1710-1719

Abstract

A widely used model of simultaneous luminance pattern masking is based on mechanisms that sum inputs linearly and produce a response that is an S-shaped function of that sum. This model makes two predictions about masking: (1) Changing the masker spatial waveform will shift the threshold-versus-masker contrast function horizontally by a multiplicative constant. (2) Adding a second fixed-contrast masker will shift this function horizontally by an additive constant. Experimental tests do not support these predictions. The results can be explained by a newmodel that incorporates broadband divisive inhibition, consistent with physiology.

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Documento generato il 27/11/20 alle ore 01:11:05