Distribution of hand location in monkeys during spontaneous behavior

被引：39

作者：

Graziano, MSA ^{[1
]}

Cooke, DF ^{[1
]}

Taylor, CSR ^{[1
]}

Moore, T ^{[1
]}

机构：

[1] Princeton Univ, Dept Psychol, Princeton, NJ 08544 USA

来源：

EXPERIMENTAL BRAIN RESEARCH | 2004年 / 155卷 / 01期

关键词：

reaching; grasping; motor cortex; posture;

D O I：

10.1007/s00221-003-1701-4

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Recently it was shown that electrical stimulation of the precentral gyrus of monkeys can evoke complex, coordinated movements. In the forelimb representation, stimulation of each site caused the arm to move to a specific final posture, and thus the hand to move to a location in space. Among these stimulation-evoked hand locations, certain regions of the hand's workspace were more represented than others. We hypothesized that a similar non-uniform distribution of hand location should be present during a monkey's spontaneous behavior. The present study examined the distribution of hand location of monkeys in their home cages. This distribution was similar to that found by stimulation of the precentral gyrus. That is, arm postures that were over-represented in spontaneous behavior were also over-represented in the movements evoked by cortical stimulation.

引用

页码：30 / 36

页数：7

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