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Titolo:
RESPONSE LATENCIES AND EVENT-RELATED POTENTIALS DURING THE GAP PARADIGM USING SACCADIC RESPONSES IN HUMAN-SUBJECTS
Autore:
GOMEZ C; ATIENZA M; GOMEZ GJ; VAZQUEZ M;
Indirizzi:
UNIV SEVILLA,FAC PSICOL,LAB PSICOBIOL,AVDA FCO JAVIER S-N E-41005 SEVILLE SPAIN UNIV SEVILLA,DTO LENGUAJES & SISTEMAS INFORMATICOS SEVILLE SPAIN
Titolo Testata:
International journal of psychophysiology
fascicolo: 1-2, volume: 23, anno: 1996,
pagine: 91 - 99
SICI:
0167-8760(1996)23:1-2<91:RLAEPD>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORTICAL POTENTIALS; EXPRESS SACCADES; REACTION-TIMES; EYE-MOVEMENT; VISUAL-ATTENTION; CINGULATE CORTEX; WARNING SIGNALS; STIMULUS ONSET; OFFSET;
Keywords:
SACCADE; GAP PARADIGM; EVENT-RELATED POTENTIAL; CORTICAL PRIMING; FRONTAL CIRCUIT; LATENCY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
C. Gomez et al., "RESPONSE LATENCIES AND EVENT-RELATED POTENTIALS DURING THE GAP PARADIGM USING SACCADIC RESPONSES IN HUMAN-SUBJECTS", International journal of psychophysiology, 23(1-2), 1996, pp. 91-99

Abstract

An experiment was conducted in naive human subjects to measure the time benefits of the latencies of saccadic eye movements to peripheral targets when the offset of a central fixation point precedes the switching on of the peripheral target by 200 ms. Naive subjects produced a shift advancement of the eye movement latencies to the targets with respect to when there is no such temporal gap. Simultaneously, the event-related potentials produced by visual stimuli and saccadic eye movements were recorded. The switching on of the central fixation point induced a negative component that could be considered a contingent negativevariation. Subsequently, in the control non-gap condition visual evoked potentials and P300 appear. The temporal gap paradigm induced offset visual-evoked potentials and a frontal negativity; it also induced ahigher P300 than the non-gap condition. The saccadic ERPs also showeda frontal negativity preceding the saccade during the gap condition. The results suggest that fast regular saccades during the gap paradigmoccur by a priming of premotor and motor frontal circuits indexed by the recorded negativity during the gap paradigm.

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Documento generato il 11/07/20 alle ore 03:56:03