Strategy-dependent encoding of planned arm movements in the dorsal premotor cortex.
Strategy-dependent encoding of planned arm movements in the dorsal premotor cortex.
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DOI:
10.1126/science.1220642
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发表时间:
2012-08-24
期刊:
影响因子:
--
通讯作者:
Moran DW
中科院分区:
文献类型:
--
作者:
Pearce TM;Moran DW
The kinematic strategy encoded in motor cortical areas for classic straight-line reaching is remarkably simple and consistent across subjects, despite the complicated musculoskeletal dynamics that are involved. As tasks become more challenging, however, different conscious strategies may be utilized to improve perceived behavioral performance. We discovered that additional spatial information appeared both in single neurons and in the population code of monkey dorsal premotor cortex when obstacles impeded direct reach paths. The neural correlate of movement planning varied between subjects in a manner consistent with the use of different strategies to optimize task completion. These distinct planning strategies were manifested in the timing and strength of the information contained in the neural population code.
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