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Titolo:
Visual memory for random block patterns defined by luminance and color contrast
Autore:
Cornelissen, FW; Greenlee, MW;
Indirizzi:
Univ Groningen, Grad Sch Behav & Cognit Neurosci, Lab Expt Ophthalmol, NL-9700 RB Groningen, Netherlands Univ Groningen Groningen Netherlands NL-9700 RB B Groningen, Netherlands Univ Freiburg, Dept Neurol, D-79106 Freiburg, Germany Univ Freiburg Freiburg Germany D-79106 Neurol, D-79106 Freiburg, Germany
Titolo Testata:
VISION RESEARCH
fascicolo: 3, volume: 40, anno: 2000,
pagine: 287 - 299
SICI:
0042-6989(2000)40:3<287:VMFRBP>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
SHORT-TERM-MEMORY; INFORMATION; ATTENTION; DISCRIMINATION; INTEGRATION; MECHANISMS; STORAGE;
Keywords:
visual short term memory; working memory; luminance; color; signal detection theory; model;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Cornelissen, FW Univ Groningen, Grad Sch Behav & Cognit Neurosci, Lab ExptOphthalmol, POB30001, NL-9700 RB Groningen, Netherlands Univ Groningen POB30001 Groningen Netherlands NL-9700 RB
Citazione:
F.W. Cornelissen e M.W. Greenlee, "Visual memory for random block patterns defined by luminance and color contrast", VISION RES, 40(3), 2000, pp. 287-299

Abstract

We studied the ability of human subjects to memorize the visual information in computer-generated random block patterns defined either by luminance contrast, by color contrast, or by both. Memory performance declines rapidlywith increasing inter-stimulus interval, showing a half-life of approximately 3 s. We further show that memory performance declines with eccentricityapproximately as a Gaussian function of position. Memory decay functions did not depend on whether the patterns were defined by luminance or color contrast. Changing both luminance and color components of block patterns in conjunction did not improve performance suggesting a single memory mechanismis used to store luminance and color derived pattern information. Our results further suggest that color identity (hue, saturation) and pattern information extracted from color- or luminance-contrast are stored independentlyof each other. (C) 2000 Elsevier Science Ltd. All rights reserved.

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Documento generato il 09/08/20 alle ore 23:14:38