Processing spatial information in the sensorimotor branch of the visual system
Processing spatial information in the sensorimotor branch of the visual system
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DOI：
10.1016/s0042-6989(00)00193-0
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发表时间：
2000-01-01
期刊：
影响因子：
1.8
通讯作者：
Huemer, V
中科院分区：
文献类型：
--
作者：
Bridgeman, B;Gemmer, A;Huemer, V
我们区分视觉空间的两种表征：认知表征驱动感知，感觉运动表征控制视觉引导行为。两种表示中的空间值通过Roelofs效应分离：偏离中心的帧内的目标出现在与帧方向相反的位置上。这种效果出现在口头测量（认知）上，但不适用于目标（感觉运动）。2秒的反应延迟在运动测量中引起Roelofs效应，显示运动记忆的限制。运动错误与反应时不相关。受试者可以击中两个相同目标中的一个，这是一个涉及选择的过程，而不受鲁洛夫斯效应的干扰，这表明即使在认知选择启动运动处理时，感觉运动系统也可以使用自己的坐标。(C)2000爱思唯尔科技有限公司版权所有。
We distinguish two representations of visual space: a cognitive representation drives perception, and a sensorimotor representation controls visually guided behavior. Spatial values in the two representations are separated with the Roelofs effect: a target within an off-center frame appears biased in a location opposite the direction of the frame. The effect appears for a verbal measure (cognitive) but not for a jab at the target (sensorimotor). A 2-s response delay induces a Roelofs effect in the motor measure, showing the limit of motor memory. Motor error is not correlated with reaction time. Subjects could strike one of two identical targets, a process involving choice, without intrusion of a Roelofs effect, showing that the sensorimotor system can use its own coordinates even when a cognitive choice initiates the motor processing. (C) 2000 Elsevier Science Ltd. All rights reserved.