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Titolo:
AN EVENT-RELATED POTENTIAL EXAMINATION OF ATTENDED AND UNATTENDED STIMULI IN VISUAL SELECTION USING BILATERAL STIMULUS-PRESENTATION
Autore:
DRYSDALE KA; FINLAY DC; FULHAM WR;
Indirizzi:
UNIV NEWCASTLE,DEPT PSYCHOL NEWCASTLE NSW 2308 AUSTRALIA AUSTRALIAN NATL UNIV,DIV PSYCHOL CANBERRA ACT 0200 AUSTRALIA
Titolo Testata:
Biological psychology
fascicolo: 2-3, volume: 39, anno: 1995,
pagine: 115 - 129
SICI:
0301-0511(1995)39:2-3<115:AEPEOA>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIVIDED ATTENTION CONDITIONS; INDEX FOCUSED ATTENTION; SPATIAL ATTENTION; BRAIN POTENTIALS; SEARCH; INFORMATION; DISPLAYS; ARRAYS; FIELD; TASKS;
Keywords:
VISUAL SELECTIVE ATTENTION; BILATERAL PRESENTATION; INTERFERENCE; N2;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
K.A. Drysdale et al., "AN EVENT-RELATED POTENTIAL EXAMINATION OF ATTENDED AND UNATTENDED STIMULI IN VISUAL SELECTION USING BILATERAL STIMULUS-PRESENTATION", Biological psychology, 39(2-3), 1995, pp. 115-129

Abstract

The experiment reported here examined an interference paradigm using a bilateral stimulus presentation in which stimuli were presented simultaneously in the left and right visual fields. The lateralization of the early visual components allowed an ERP examination of material presented in each field. Attention was directed to one field or the otheron each trial by a 100% valid cue. Two letters were nominated as targets and the simultaneous presentation allowed presentation of materialcompatible, incompatible or neutral with reference to the target. A negative peak was observed at 230 ms post stimulus at occipital and temporal sites. There was a variation in this peak for unattended stimuli, with compatible and incompatible target letters being significantly different to non-target letters. Contrary to previous research, this finding suggests that material is not filtered out at an early stage asproposed by early selection. It was found that the response to unattended target material also varied according to the type of item presented at the attended location. These findings were discussed in relationto previous studies which found no difference in the processing of unattended target and non-target material, and also in relation to suggestions that automatic processing of unattended material occurs only when there is controlled processing occurring simultaneously.

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Documento generato il 22/09/20 alle ore 14:27:32