School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
J Mot Behav. 2021;53(4):431-444. doi: 10.1080/00222895.2020.1792823. Epub 2020 Jul 13.
The primary motor cortex (M1) is one of the main cortical areas involved in motor learning. However, little is known about its differential role in the learning of the relative and absolute dimensions of motor skills. We investigated the role of M1 in the learning of the dimensions of a complex motor skill. Forty-eight participants practiced golf putting and were stimulated for 20 minutes with real or sham bihemispheric tDCS before acquisition. tDCS improved global performance from pre- to post-test. Only those with worse initial performance who were stimulated by tDCS showed a significant improvement in the skill's absolute dimension. No effects of tDCS were found for the relative dimension. Our results suggest that M1 has a distinct participation in the learning of the absolute dimension of complex motor skills, and tDCS effects are influenced by the learner's level of initial performance.
初级运动皮层（M1）是参与运动学习的主要皮层区域之一。然而，对于它在运动技能的相对和绝对维度学习中的差异作用知之甚少。我们研究了 M1 在复杂运动技能维度学习中的作用。48 名参与者练习高尔夫推杆，在获得之前，用真实或假的双半球 tDCS 刺激 20 分钟。tDCS 提高了从预测试到后测试的整体表现。只有那些初始表现较差且经 tDCS 刺激的参与者在技能的绝对维度上显示出显著的提高。tDCS 对相对维度没有影响。我们的结果表明，M1 对复杂运动技能的绝对维度的学习有明显的参与，并且 tDCS 的效果受到学习者初始表现水平的影响。
