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自动在线控制在伸手和抓握中的电机调整。

Automatic online control of motor adjustments in reaching and grasping.

机构信息

INSERM, U1028, CNRS, UMR5292, Lyon Neurosciences Research Center, ImpAct, 16 avenue du doyen Lépine, 69676 Bron cedex, France; Université Lyon 1, Villeurbanne, France.

INSERM, U1028, CNRS, UMR5292, Lyon Neurosciences Research Center, ImpAct, 16 avenue du doyen Lépine, 69676 Bron cedex, France; Institut de recherche biomédicale des armées (IRBA), BP 73, 91223 Brétigny-sur-Orge cedex, France.

出版信息

Neuropsychologia. 2014 Mar;55:25-40. doi: 10.1016/j.neuropsychologia.2013.12.005. Epub 2013 Dec 13.

Abstract

Following the princeps investigations of Marc Jeannerod on action-perception, specifically, goal-directed movement, this review article addresses visual and non-visual processes involved in guiding the hand in reaching or grasping tasks. The contributions of different sources of correction of ongoing movements are considered; these include visual feedback of the hand, as well as the often-neglected but important spatial updating and sharpening of goal localization following gaze-saccade orientation. The existence of an automatic online process guiding limb trajectory toward its goal is highlighted by a series of princeps experiments of goal-directed pointing movements. We then review psychophysical, electrophysiological, neuroimaging and clinical studies that have explored the properties of these automatic corrective mechanisms and their neural bases, and established their generality. Finally, the functional significance of automatic corrective mechanisms-referred to as motor flexibility-and their potential use in rehabilitation are discussed.

摘要

继马克·让诺(Marc Jeannerod)对动作感知的初步研究,特别是目标导向运动之后,本文综述了在伸手或抓握任务中指导手部运动所涉及的视觉和非视觉过程。本文考虑了不同来源的运动校正的贡献;这些包括手部的视觉反馈,以及在注视扫视方向后经常被忽视但重要的空间更新和目标定位的锐化。一系列指向目标的指向运动的初步实验强调了一种自动在线过程,该过程引导肢体轨迹向其目标移动。然后,我们回顾了探索这些自动校正机制的特性及其神经基础的心理物理学、电生理学、神经影像学和临床研究,并确立了它们的普遍性。最后,讨论了自动校正机制(称为运动灵活性)的功能意义及其在康复中的潜在应用。

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