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Titolo:
LATENCY OF SACCADES DURING SMOOTH-PURSUIT EYE-MOVEMENT IN MAN - DIRECTIONAL ASYMMETRIES
Autore:
TANAKA M; YOSHIDA T; FUKUSHIMA K;
Indirizzi:
HOKKAIDO UNIV,SCH MED,DEPT PHYSIOL,WEST 7,NORTH 15 SAPPORO HOKKAIDO 060 JAPAN
Titolo Testata:
Experimental Brain Research
fascicolo: 1, volume: 121, anno: 1998,
pagine: 92 - 98
SICI:
0014-4819(1998)121:1<92:LOSDSE>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONKEY SUPERIOR COLLICULUS; HUMAN EXPRESS SACCADES; REACTION-TIMES; VISUAL-ATTENTION; WARNING SIGNALS; FIXATION CELLS; GAP; DISENGAGEMENT; FACILITATION; OFFSETS;
Keywords:
SACCADE; LATENCY; FIXATION; SMOOTH PURSUIT; GAP; HUMAN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
41
Recensione:
Indirizzi per estratti:
Citazione:
M. Tanaka et al., "LATENCY OF SACCADES DURING SMOOTH-PURSUIT EYE-MOVEMENT IN MAN - DIRECTIONAL ASYMMETRIES", Experimental Brain Research, 121(1), 1998, pp. 92-98

Abstract

To examine the effects of smooth-pursuit eye movements on the initiation of saccades, their latency was measured when subjects initially fixated or pursued a target. In half of the block of trials, the fixation or pursuit target was extinguished 200 ms before the saccade tar-eelwas illuminated (gap trials). Reduction of the mean saccade latency in the gap trials (the ''gap effect'') was evident even when the subjects were pursuing a moving target. consistent with previous observations. The effect of pm-suit direction on saccade latency was also examined. Saccades in the same direction as the preceding pursuit (forward saccades) had shorter latencies than those in the opposite direction (backward saccades). This asymmetry was observed in both the gap and nongap trials. Although the forward-backward asymmetry was much smaller than the ''gap effect'', it was statistically significant in six of eight cases. These results suggest that the preparation of saccades is affected by smooth-pursuit eye movements.

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Documento generato il 15/07/20 alle ore 13:56:03