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Titolo:
PARALLEL-PROCESSING IN VISUAL SHORT-TERM-MEMORY
Autore:
MAGNUSSEN S; GREENLEE MW; THOMAS JP;
Indirizzi:
UNIV OSLO,DEPT PSYCHOL,VIS LAB,BOX 1094 N-0317 OSLO NORWAY UNIV FREIBURG,INST BIOPHYS FREIBURG GERMANY UNIV CALIF LOS ANGELES,DEPT PSYCHOL LOS ANGELES CA 90024
Titolo Testata:
Journal of experimental psychology. Human perception and performance
fascicolo: 1, volume: 22, anno: 1996,
pagine: 202 - 212
SICI:
0096-1523(1996)22:1<202:PIVS>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPATIAL-FREQUENCY DISCRIMINATION; HUMAN-VISION; ORIENTATION; CONTRAST; INFORMATION; MOTION; PERCEPTION; RETENTION; ENERGY; MODELS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Citazioni:
44
Recensione:
Indirizzi per estratti:
Citazione:
S. Magnussen et al., "PARALLEL-PROCESSING IN VISUAL SHORT-TERM-MEMORY", Journal of experimental psychology. Human perception and performance, 22(1), 1996, pp. 202-212

Abstract

Visual short-term memory for the contrast and spatial frequency of sinusoidal gratings was measured in a delayed discrimination task in which the 2 stimuli to be compared were separated in time by 1-10 s interstimulus intervals (ISIs). Delayed discrimination thresholds for spatial frequency and contrast were compared, both when the 2 types of thresholds were measured in separate blocks of trials and when the 2 typesof measures were randomly intermixed in an uncertainty paradigm, which required participants to process information about both dimensions on each trial. In both cases, accuracy of memory for spatial frequency was independent of ISI, but memory for contrast decreased as ISI increased. Performance was lower in the uncertainty case, but only by an amount predicted by statistical decision theory for independent sources. The results are consistent with a model assuming a set of parallel special-purpose visual discrimination and short-term memory mechanisms.

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Documento generato il 24/10/20 alle ore 11:39:01