人体感官皮质和身体表现:在视觉-自身感知暗示冲突期间更新运动系统
Jasmine L Mirdamadi1, Reshma Babu1, Manasi Wali1
1Department of Kinesiology, School of Public Health-Bloomington, Indiana University Bloomington.
bioRxiv : the preprint server for biology
|October 7, 2024
概括
大脑通过自身感知重新校准手的位置感知,主要体感皮质 (SI) 对于更新运动指令至关重要. 这种重新校准依赖于单体感官 proprioceptive 处理,而不是视觉输入.
科学领域:
- 神经科学是一个神经科学.
- 传感器-运动器集成.
- 机构代表机构的代表.
背景情况:
- 准确的自愿运动依赖于大脑对手部位置的多感官表示.
- 冲突的视觉和自身感知线索触发了单模式估计的重新校准.
- 这种重新校准被认为是为了更新电机系统,以实现精确的手动.
研究的目的:
- 研究主要体感皮质 (SI) 在更新大脑对手部位置的表示中的作用.
- 确定SI是否对自感性重新校准和感觉运动集成至关重要.
- 在身体表现更新中区分单感官和多感官处理的作用.
主要方法:
- 实验1:在自感性重新校准过程中测量了短延迟附带抑制 (SAI).
- 实验2:使用重复性跨磁刺激 (TMS) 来调节SI活动.
- 在不同的条件下评估手部位置的自感和视觉估计的变化.
主要成果:
- 自身感受性重新校准与SAI的变化相关,表明传感运动集成.
- 用TMS调节SI活动影响了自感再校准,但没有视觉再校准.
- 亲感和视觉重新校准之间的反向关系不受TMS的影响.
结论:
- 主体体感官皮层 (SI) 对于基于身体表现的自感变化来更新运动系统至关重要.
- 这种SI的功能是由单感官自感受处理 (unisensory proprioceptive processing) 介导的,与多感官计算不同.
- 独立的路径可能会将视觉和多感官身体表征传递给运动系统.
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