COMPONENTS OF PRISM ADAPTATION IN TERMINAL AND CONCURRENT EXPOSURE - ORGANIZATION OF THE EYE-HAND COORDINATION LOOP
COMPONENTS OF PRISM ADAPTATION IN TERMINAL AND CONCURRENT EXPOSURE - ORGANIZATION OF THE EYE-HAND COORDINATION LOOP
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DOI：
10.3758/bf03207476
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发表时间：
1988-07-01
期刊：
影响因子：
--
通讯作者：
WALLACE, B
中科院分区：
文献类型：
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作者：
REDDING, GM;WALLACE, B
在三个实验中，后效应措施的视觉位移和本体感觉位移的组成部分和总位移的眼手协调获得棱镜曝光。在一种情况下，手在大部分矢状指向运动中是可见的（同时曝光），而在另一种情况下，只有指尖在运动结束时是可见的（终端曝光）。视觉移位大于本体感觉移位与终端曝光和相反的是真实的同时曝光，除了本体感觉移位往往是更大的曝光条件时，头部运动是允许的。总转移与其组成部分之和没有区别，但存在目标时除外，在这种情况下，总转移往往大于总和。未暴露的手的本体感受的后效很小，除非头部运动是允许的，似乎与感觉到头部位置的变化。未发现用未暴露的手指向目标的后遗症与视觉转移无关。结果进行了讨论，在一个视图的眼-手协调环作为一个串行连接的组件眼-头和手-头系统，与适应的轨迹确定的方向组件systemes之间的协调链接。
In three experiments, after effect measures of visual-shift and proprioceptive-shift components and total shift in eye-hand coordination were obtained for prism exposure. In one condition the hand was visible for most of the sagittal pointing movement (concurrent exposure), whereas in the other condition only the fingertip was visible at the end of fthe movement (terminal exposure). Visual shift was greater than proprioceptive shift with terminal exposure and the reverse was true with concurrent exposure, excpt that proprioceptive shift tended to be greater in both exposure conditions when head movement was permitted. Total shift was not different from the sum of its components except when targets were present, in which case total shift tended to be greater than the sum. Proprioceptive aftereffects for the unexposed hand were small except when head movement was permitted and appeared to be related to changes in felt head position. Aftereffects for target pointing with the unexposed hand were not found to be related to visual shift. The results are discussed in terms of a view of the eye-hand coordination loop as a serial linkage of component eye-head and hand-head systems, with the locus of adaptation determined by the direction of the coordinative linkage between component systmes.