INTERFERENCE BETWEEN SACCADIC EYE AND GOAL-DIRECTED HAND MOVEMENTS

被引:61
作者
BEKKERING, H
ADAM, JJ
VANDENAARSSEN, A
KINGMA, H
WHITING, HTA
机构
[1] UNIV LIMBURG, DEPT MOVEMENT SCI, 6200 MD MAASTRICHT, NETHERLANDS
[2] ACAD HOSP MAASTRICHT, DIV BALANCE DISORDERS, MAASTRICHT, NETHERLANDS
[3] UNIV YORK, DEPT PSYCHOL, YORK YO1 5DD, N YORKSHIRE, ENGLAND
[4] UNIV TRONDHEIM, DEPT MOVEMENT SCI, TRONDHEIM, NORWAY
关键词
EYE-HAND COORDINATION; EYE MOVEMENTS; HAND MOVEMENTS; REACTION TIMES; SPATIAL; VISUAL ATTENTION; HUMAN;
D O I
10.1007/BF00231070
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The aim of the present study was to investigate the nature of the interference effect when the eye is accompanied by a goal-directed hand movement rather than when the eye moves alone. Latencies of eye and hand movements in response to small and large visual target stimuli were measured while employing dual-task methodology. Experiments 1 and 2 were designed to investigate whether the interference effect is related to a specific temporal bottleneck, i.e. the eye and hand motor systems share limited available processes at a specific point in time. The findings of robust interference effects independent of the temporal organization of eye and hand contradicted this notion. The interference effect was not present in experiment 3, where response preparation and target-localization mechanisms were limited by providing subjects with advance information about target position. Experiment 4 employed randomized target positions again and highly salient stimuli, the latter only limiting target-localization processes. The absence of an interference effect adds weight to the argument that visual spacial attentional mechanisms involved in target localization constitute the locus of the interference. Neurophysiological implications of these findings are discussed.
引用
收藏
页码:475 / 484
页数:10
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