Fixation disengagement and eye-movement latency
Fixation disengagement and eye-movement latency
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固视脱离和眼球运动潜伏期
DOI：
10.3758/bf03209759
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
H. Ono
中科院分区：
文献类型：
--
作者：
W. J. Tam;H. Ono
我们研究了在固定刺激、移动刺激或中心凹外刺激的视觉注视过程中出现的目标的眼动潜伏期。注视时的刺激在靶点开始之前(间隙条件)或靶点开始之后(重叠条件)被关闭。与以前的研究一致，缝隙条件下的眼跳潜伏期比重叠条件下的短(缝隙效应)。在实验1中，观察到了集中眼动的间隙效应。在实验2中，观察到了在视觉追逐运动刺激的过程中，针对出现在目标上的眼跳的间隙效应。在实验3中，观察到了针对中心凹外固定时出现的目标的眼跳的间隙效应。本研究结果将视觉注视过程中眼球跳动的间隙效应扩展到(A)视觉注视过程中的眼球跳动，(B)流畅视觉追逐过程中的眼跳运动，以及(C)中心凹外注视过程中的眼跳运动。本研究结果针对注视锁定和注视移位眼动反应这两个不相容的目标进行了讨论。
We examined eye-movement latencies to a target that appeared during visual fixation of a stationary stimulus, a moving stimulus, or an extrafoveal stimulus. The stimulus at fixation was turned off either before target onset (gap condition) or after target onset (overlap condition). Consistent with previous research, saccadic latencies were shorter in gap conditions than they were in overlap conditions (the gap effect). In Experiment 1, a gap effect was observed for vergence eye movements. In Experiment 2, a gap effect was observed for saccades directed at a target that appeared during visual pursuit of a moving stimulus. In Experiment 3, a gap effect was observed for saccades directed at a target that appeared during extrafoveal fixation. The present results extend reports of the gap effect for saccadic shifts during visual fixation to (a) vergence shifts during visual fixation, (b) saccadic shifts during smooth visual pursuit, and (c) saccadic shifts during extrafoveal fixation. The present findings are discussed with respect to the incompatible goals of fixation-locking and fixation-shifting oculomotor responses.