在M1处经直流刺激的时间不影响运动序列学习
Hakjoo Kim1, Bradley R King2, Willem B Verwey3
1Motor Neuroscience Lab, Department of Health and Kinesiology, Texas A&M University, College Station, TX, United States.
Heliyon
|February 19, 2024
概括
在运动训练之前,训练期间或训练结束后,对主运动皮层 (M1) 施加的阳道横直流刺激 (tDCS) 并没有提高技能学习或在串行反应时间任务 (SRTT) 中的线下收益. 这表明,单次的tDCS会话可能无法有效地增强运动技能的获得.
科学领域:
- 神经科学是一个神经科学.
- 运动学习是指运动学习.
- 认知增强 认知增强
背景情况:
- 对主要运动皮质 (M1) 应用的阳横直流刺激 (tDCS) 已被研究其增强运动技能获取的潜力.
- 以前的研究表明,与运动训练同时使用的tDCS可能会产生最显著的离线性能增长,但这些发现往往来自不同的实验方法.
研究的目的:
- 为了研究单次道tDCS对M1在不同时间点相对于串行反应时间任务 (SRTT) 性能进行运动训练的有效性.
- 为了确定在SRTT实践之前,期间或之后管理的tDCS是否会影响随后的技能发展和离线学习,与无刺激对照相比.
主要方法:
- 九十名参与者被随机分配到接受15分钟的2mA阳极tDCS (阳极在右M1,阴极在左M1) 在练习八要素SRTT之前,期间或之后,或给没有tDCS的对照组.
- 参与者使用左手执行SRTT.
- 在1小时和24小时的实践后测试块中评估了表现.
主要成果:
- 包括对照组在内的所有组在1小时和24小时测试间隔内都显示出SRTT性能在线下显著提高.
- 在tDCS条件 (练习前,练习期间或练习后) 和无刺激对照组之间,技能发展轨迹没有统计学上显著的差异.
结论:
- 对M1应用的单个阳极tDCS会话似乎不会显著提高新型SRTT的运动技能学习或离线收益,无论其与实践相比的时间如何.
- 这些发现有助于越来越多的证据质疑单次外源刺激协议的有效性,作为改善技能获取的运动训练的辅助.
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