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意志肌肉激活加剧了神经元处理的主要感觉运动皮质中的自主感受性 afference:一个EEG研究
Alessandra Giangrande1,2, Giacinto Luigi Cerone2, Alberto Botter2
1Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
Journal of neurophysiology
|November 15, 2023
概括
意志肌肉激活加剧了大脑中的自感处理. 这项研究表明,积极的脚运动比被动运动更能增强皮质可动力学连贯性 (CKC),这表明运动效能可以增强感官反.
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
- 身体上的感觉 (somatosensation) 是一种感觉.
背景情况:
- 自身感知,身体位置和运动的感觉,对于运动控制至关重要.
- 皮质神经动力学连贯性 (CKC) 量化了大脑活动和四肢运动之间的神经合.
- 在自感刺激期间,意志肌肉激活对CKC的影响尚不清楚.
研究的目的:
- 研究 volitional 肌肉激活在脚 proprioceptive 刺激期间对皮质可动力学连贯性 (CKC) 的影响.
- 为了确定活跃的肌肉参与是否增强了神经处理的自感 afference.
主要方法:
- 25名健康的志愿者接受了脑电图 (EEG),脑电图 (EMG) 和运动记录.
- 脚关节旋转被被动唤起或积极执行与一个持续的脚下曲.
- 测量CKC强度是以2Hz的EEG和脚动力学之间的最大相干度来衡量.
主要成果:
- 无论是被动的还是活跃的条件都显示出显著的CKC,在主要的感觉运动皮层 (SM1) 上达到顶峰.
- 与被动状态 (0.03 ± 0.04) 相比,在活性状态 (0.13 ± 0.14) 中,CKC强度显著更高.
- 意志肌肉激活在SM1皮层中加强了神经元的自感处理.
结论:
- 意志肌肉激活增强了来自脚的自身感知信息的神经处理.
- 这种效应可能是由于自身受体的外周敏感化和脊髓和皮质水平的中央调制.
- 研究结果表明,CKC可以在活动任务期间使用,以评估运动效能与自身感受效能之间的关系,在各种情况下,如康复.
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