Saccadic performance as a function of the presence and disappearance of auditory and visual fixation stimuli

被引:21
作者
Taylor, TL [1 ]
Klein, RM
Munoz, DP
机构
[1] Dalhousie Univ, Halifax, NS, Canada
[2] Queens Univ, Kingston, ON, Canada
关键词
D O I
10.1162/089892999563337
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Relative to when a fixated stimulus remains visible, saccadic latencies are facilitated when a fixated stimulus is extinguished simultaneously with or prior to the appearance of an eccentric auditory, visual, or combined visual-auditory target. In a study of nine human subjects, Ne determined whether such facilitation (the "gap effect") occurs equivalently for the disappearance of fixated auditory stimuli and fixated visual stimuli. In the present study, a fixated auditory (noise) stimulus remained present (overlap) or else was extinguished simultaneously with (step) or 200 msec prior to (gap) the appearance of a visual, auditory (tone), or combined visual-auditory target 10 degrees to the left or right of fixation. The results demonstrated equivalent facilitatory effects due to the disappearance of fixated auditory and visual stimuli and are consistent with the presumed role of the superior colliculus in the gap effect.
引用
收藏
页码:206 / 213
页数:8
相关论文
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