SENSORIMOTOR TRANSFORMATION DURING EYE-MOVEMENTS TO REMEMBERED VISUAL TARGETS
SENSORIMOTOR TRANSFORMATION DURING EYE-MOVEMENTS TO REMEMBERED VISUAL TARGETS
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DOI：
10.1016/0042-6989(91)90010-3
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发表时间：
1991-01-01
期刊：
影响因子：
1.8
通讯作者：
ANDERSEN, RA
中科院分区：
文献类型：
--
作者：
GNADT, JW;BRACEWELL, RM;ANDERSEN, RA
对于视觉目标的眼球运动，大脑必须将视觉系统的视网膜定位坐标框架转换为动眼植物的坐标框架。理想情况下，响应应该与目标需求完全匹配。然而，在眼球运动到记忆目标时，反应是空间扭曲的。该变换不保留准确的视网膜定位，具有恒定和可变的误差成分。一般来说，恒定的扭曲模式表现为向上扫视时的高度表和向下运动时的低度表。大多数错误是在内存相关延迟的前800毫秒累积的。这些结果是根据空间信息如何编码和转换的理论来解释的。
For eye movements made to visual targets, the brain must transform the retinotopic coordinate frame of the visual system to that of the oculomotor plant. Ideally, responses should exactly match target demands. However, during eye movements to remembered targets, responses are spatially distorted. The transformation does not retain accurate retinotopic registration, having both constant and variable components of error. Generally, the constant pattern of distortion appears as a hypermetria for upward saccades and a hypometria for downward movements. Most of the error accumulates during the first 800 msec of memory-contingent delay. The results are interpreted with respect to theories of how spatial information may be coded and transformed.