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An Experiment Using Functional Near-Infrared Spectroscopy and Robot-Assisted Multi-Joint Pointing Movements of the Lower Limb
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在人类头顶皮层刺激后的运动意图.

Michel Desmurget1, Karen T Reilly, Nathalie Richard

  • 1Centre de Neuroscience Cognitive, CNRS, UMR 5229, 69500 Bron, France.

Science (New York, N.Y.)
|May 9, 2009
PubMed
概括

意识的运动意图和意识起源于头顶皮层. 在这里,电刺激创造了意图和虚假的运动感,而前运动刺激则在没有意识的情况下引起了实际的运动.

科学领域:

  • 神经科学是一个神经科学.
  • 认知神经科学 认知神经科学
  • 大脑外科手术 脑外科手术

背景情况:

  • 表面皮层和前运动皮层区域与运动控制和意识有关.
  • 了解运动意图和意识的神经基础至关重要.

研究的目的:

  • 调查头顶和前运动皮层在产生运动意图和意识方面的作用.
  • 为了确定意识的运动意图和意识的神经相关.

主要方法:

  • 在清醒手术期间,电脑刺激被应用于七名患者的头顶和前运动皮质.
  • 患者报告了在刺激后对意图和意识的主观经验.
  • 用电肌图来检测实际的肌肉活动.

主要成果:

  • 刺激右下壁皮质皮质诱导了动肢和言语的意图.
  • 刺激左下壁膜皮层诱导了语音和唇部运动的意图.
  • 增加的头顶刺激导致了错误的运动执行感,没有电肌图学证据.
  • 运动前皮层刺激唤起了明显的运动,但患者否认执行它们.

结论:

  • 意识的运动意图和意识来自于运动执行之前的头顶皮层活动.

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  • 顶层皮质在主观体验的意图和意识到运动中发挥着关键作用.
  • 强调了意图生成 (双侧) 和运动执行 (前驱动) 之间的区别.