An alternative interpretation of population vector rotation in macaque motor cortex

被引：14

作者：

Cisek, P

Scott, SH ^{[1
]}

机构：

[1] Queens Univ, Dept Anat & Cell Biol, Kingston, ON K7L 3N6, Canada

[2] Univ Montreal, Dept Physiol, Ctr Rech Sci Neurol, Montreal, PQ H3C 3J7, Canada

来源：

NEUROSCIENCE LETTERS | 1999年 / 272卷 / 01期

基金：

英国医学研究理事会; 美国国家卫生研究院;

关键词：

mental rotation; population vector; primary motor cortex; motor planning; S-R compatibility;

D O I：

10.1016/S0304-3940(99)00338-9

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Neural recordings from the primary motor cortex of monkeys performing movements at an angle to a cue stimulus have yielded two main results: (A) the population vector rotates from the direction of the cue to the direction of movement, and (B) cells with intermediate preferred directions are recruited during the middle of this rotation. These results have been interpreted as the neural correlates of a process of 'mental rotation'. Here we propose that results A and B are also consistent with an alternate hypothesis of 'response substitution', given four well known features of cortical neurophysiology. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.

引用

页码：1 / 4

页数：4

共 17 条

[11] Comparison of onset time and magnitude of activity for proximal arm muscles and motor cortical cells before reaching movements [J].