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Titolo:
SPATIAL-FREQUENCY AND INTERFERENCE BETWEEN GLOBAL AND LOCAL-LEVELS OFSTRUCTURE
Autore:
LAMB MR; YUND EW;
Indirizzi:
CALIF STATE UNIV HAYWARD,DEPT PSYCHOL HAYWARD CA 94542 VET ADM MED CTR MARTINEZ CA 00000
Titolo Testata:
Visual cognition
fascicolo: 3, volume: 3, anno: 1996,
pagine: 193 - 219
SICI:
1350-6285(1996)3:3<193:SAIBGA>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
TEMPORAL-PARIETAL JUNCTION; HEMISPHERIC-DIFFERENCES; COMPOUND GRATINGS; WAVE GRATINGS; REACTION-TIME; INFORMATION; STIMULI; PRECEDENCE; CHANNELS; LESIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Citazione:
M.R. Lamb e E.W. Yund, "SPATIAL-FREQUENCY AND INTERFERENCE BETWEEN GLOBAL AND LOCAL-LEVELS OFSTRUCTURE", Visual cognition, 3(3), 1996, pp. 193-219

Abstract

In three experiments, subjects identified local or global forms of hierarchical stimuli that had been ''contrast-balanced''. Contrast balancing eliminates low spatial frequencies, so that both local and globalforms must be identified based on high-spatial-frequency information. In all three experiments, response times (RTs) to global forms were slowed fbr contrast-balanced stimuli, suggesting that low spatial frequencies facilitate the analysis of global forms. In contrast, interference between local and global forms was little affected by contrast balancing, suggesting that interference does not depend on differences inspatial frequency between local and global forms. Consistent with earlier data, some evidence of a difference in interference for stimuli presented in the right versus left visual field was found. However, this difference was not affected by contrast balancing-a finding that is at odds with the hypothesis that the hemifield asymmetry in interference reflects a hemispheric difference in inhibitory interactions between high and low spatial frequency channels.

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Documento generato il 30/03/20 alle ore 10:20:28