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无法预测的运动引起的疼痛改变皮质运动预备活动

Emmanuel Ogalo^1,2, Hannah Ro¹, Oscar Ortiz^1,3

¹International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada.

Journal of neurophysiology

|June 18, 2025

概括

无法预测的疼痛预期通过增加皮质活动提高了运动准备,但当疼痛被移除时,这些变化消失了. 这表明注意力可以动态调节运动控制.

科学领域:

神经科学是一个神经科学.
认知科学认知科学
疼痛研究疼痛研究

背景情况:

疼痛会改变中枢运动系统的功能,但其对运动准备的影响尚不清楚.
疼痛对大脑准备运动的影响需要进一步调查.

研究的目的:

为了研究可预测与不可预测的疼痛如何影响运动准备期间的皮质活动.
为了确定这些准备性变化是否在疼痛消除后还存在.

主要方法:

脑电图 (EEG) 记录了与运动相关的皮质潜力 (MRCP),α频段振荡和激光唤起的潜力 (N2P2).
15名健康成年人参与,经历了不可预测的运动引起的疼痛.

主要成果:

无法预测的疼痛预期显著增加了MRCP振幅,运动前的α活性和N2P2振幅.
这些预备性神经变化在消除疼痛后没有持续下去.

结论:

无法预测的疼痛通过上下注意力机制调节运动准备.
增强的α活性可能会抑制感官处理以促进运动编程.
准备性神经活动是动态的,反映了短暂的皮质状态.

关键词:

电脑脑电图 (EEG) 是一种电脑电图.发动机准备工作发动机准备工作运动引起的疼痛.可以预测的可预测性.

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