Abrams R A, Meyer D E, Kornblum S
Department of Psychology, Washington University, St. Louis, Missouri 63130.
J Exp Psychol Hum Percept Perform. 1990 May;16(2):248-67. doi: 10.1037//0096-1523.16.2.248.
Three experiments are reported in which Ss produced rapid wrist rotations to a target while the position of their eyes was being monitored. In Experiment 1, Ss spontaneously executed a saccadic eye movement to the target around the same time as the wrist began to move. Experiment 2 revealed that wrist-rotation accuracy suffered if Ss were not allowed to move their eyes to the target, even when visual feedback about the moving wrist was unavailable. In Experiment 3, wrist rotations were equally accurate when Ss produced either a saccadic or a smooth-pursuit eye movement to the target. However, differences were observed in the initial-impulse and error-correction phases of the wrist rotations, depending on the type of eye movement involved. The results suggest that aimed limb movements use information from the oculomotor system about both the static position of the eyes and the dynamic characteristics of eye movements. Furthermore, the information that governs the initial impulse is different from that which guides final error corrections.
报告了三项实验，在实验中，受试者在眼睛位置受到监测的同时，快速转动手腕指向一个目标。在实验1中，受试者在手腕开始移动的同时，自发地向目标执行了一次眼球跳动。实验2表明，如果不允许受试者将眼睛移向目标，即使没有关于移动手腕的视觉反馈，手腕转动的准确性也会受到影响。在实验3中，当受试者向目标执行眼球跳动或平稳跟踪眼球运动时，手腕转动的准确性是一样的。然而，根据所涉及的眼球运动类型，在手腕转动的初始冲动和误差校正阶段观察到了差异。结果表明，有目标的肢体运动利用了来自动眼系统的关于眼睛静态位置和眼球运动动态特征的信息。此外，控制初始冲动的信息与指导最终误差校正的信息不同。
