灵长类脊髓内部神经元在运动前显示受指导的延迟活动.
1Department of Physiology & Biophysics and the Regional Primate Research Center, University of Washington, Seattle 98195, USA. yifat@u.washington.edu
Nature
|October 19, 1999
概括
研究人员在运动执行前,在脊柱内神经元中发现了准备性神经活动. 这表明广泛的运动准备,涉及脊髓内的原始化和抑制.
科学领域:
- 神经科学是一个神经科学.
- 发动机控制器的控制器
- 脊髓生理学 脊髓生理学
背景情况:
- 运动前的预备性神经活动在指示的延迟时间内已知在脊上运动中心.
- 这种活动与运动参数相关,但其在塑造电机输出中的作用尚不清楚.
研究的目的:
- 为了研究脊柱内神经元是否表现出准备性延迟活性.
- 了解这种脊柱准备活动的性质和功能.
主要方法:
- 在延迟运动任务期间,脊柱内部神经元的电生理记录.
- 在指示的延迟期和随后的运动执行期间分析神经活动.
主要成果:
- 脊髓内部神经元表现出早期运动前延迟活动,与它们与运动相关的反应不同.
- 这种脊柱延迟活动类似于脊柱上部区域的相关活动.
- 确定了两个脊柱过程:运动网络的启动和叠加的全球抑制.
结论:
- 运动准备同时发生在广泛的区域,包括脊髓.
- 脊柱准备活动涉及运动网络的启动和抑制肌肉输出.
- 这凸显了脊柱电路在准备和控制运动执行方面的双重作用.
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