Perceptual organization overcomes the effects of local surround in determining simultaneous lightness contrast.

Full Abstract

Lightness induction can occur on the basis of the immediate surround of a region (local interactions) and also on the basis of global factors of perceptual organization. The experiments reported in this article used novel displays that made it possible to differentiate the contributions of these two kinds offactors. The experiments demonstrated, for the first time, that when higher-level factors act contemporaneously with lower-level factors, the contrast effect induced by the global-organization principle of perceptual belongingness overcomes the effect due to retinal lateral inhibition.

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Author information

Author/s: Agostini, Tiziano (T); Galmonte, Alessandra (A);

Affiliation: Department of Psychology, University of Trieste, Italy. agostini(-atsign-)univ.trieste.it

Journal and publication information

Publication Type: Journal Article

Journal: Psychological science : a journal of the American Psychological Society / APS (Psychol Sci), published in United States. (Language: eng)

Reference: 2002-Jan; vol 13 (issue 1) : pp 89-93

Dates: Created 2002/03/14; Completed 2002/05/07; Revised 2004/11/17;

PMID: 11892786, status: MEDLINE (last retrieval date: 12/26/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Form Perception - physiology
Humans
Light

Light
Retina - physiology
Visual Perception - physiology

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