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Published on: January 23, 2017
神经元人口向量的心理旋转
A P Georgopoulos1, J T Lurito, M Petrides
1Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
概括
研究人员研究了 rhesus 子如何在精神上旋转运动向量. 运动皮层中的神经元群体向量反时针旋转,直接证明了手臂运动期间的精神旋转.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 发动机控制器的控制器
背景情况:
- 了解复杂的运动任务的神经基础至关重要.
- 心理旋转是一个关键的认知过程,假设是这些任务的基础.
研究的目的:
- 为了研究在运动控制中精神旋转的神经机制.
- 为了测试假设想象中的运动向量是心灵旋转的假设.
主要方法:
- 训练 rhesus 子执行与目标光相对的逆时针方向手臂运动任务.
- 在执行任务时记录运动皮层神经元活动.
- 计算随着时间的推移的神经元人口向量.
主要成果:
- 神经元群体向量表现出一个反时钟方向的逐渐旋转.
- 这种旋转发生在从目标灯方向到运动方向的方向上.
- 观察到的平均旋转速率为每秒732度.
结论:
- 直接的神经证据支持用于运动控制的心理旋转假设.
- 神经元人口向量是解码认知操作的宝贵工具.
- 这项研究增强了对大脑如何计划和执行运动的理解.
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