The primary motor cortex is associated with learning the absolute, but not relative, timing dimension of a task: A tDCS study
The primary motor cortex is associated with learning the absolute, but not relative, timing dimension of a task: A tDCS study
复制标题
DOI：
10.1016/j.physbeh.2016.03.025
复制
发表时间：
2016-06-01
影响因子：
2.9
通讯作者：
Lage, Guilherme Menezes
中科院分区：
文献类型：
--
作者：
Apolinario-Souza, Tercio;Romano-Silva, Marco Aurelio;Lage, Guilherme Menezes
初级运动皮层（M1）在产生运动参数（如长度、方向和力）中的功能作用是众所周知的；然而，M1是否与任务的绝对时间维度的参数调整有关尚不清楚。以前的研究没有应用任务和分析，可以分离绝对（变）和相对（不变）的维度。我们在运动练习前对M1进行经颅直流电刺激（tDCS），以促进运动学习。对一个顺序按键任务进行了两个目标的练习：学习相对时间维度和学习绝对时间维度。M1刺激的所有效应仅在任务的绝对维度上观察到。主要是在绝对维度的转移测试中，增产与更好的性能相关。综上所述，我们的结果表明，M1是学习电机序列的绝对时序维的重要区域。(C) 2016 Elsevier Inc.版权所有。
The functional role of the primary motor cortex (M1) in the production of movement parameters, such as length, direction and force, is well known; however, whether M1 is associated with the parametric adjustments in the absolute timing dimension of the task remains unknown. Previous studies have not applied tasks and analyses that could separate the absolute (variant) and relative (invariant) dimensions. We applied transcranial direct current stimulation (tDCS) to M1 before motor practice to facilitate motor learning. A sequential key-pressing task was practiced with two goals: learning the relative timing dimension and learning the absolute timing dimension. All effects of the stimulation of M1 were observed only in the absolute dimension of the task. Mainly, the stimulation was associated with better performance in the transfer test in the absolute dimension. Taken together, our results indicate that M1 is an important area for learning the absolute timing dimension of a motor sequence. (C) 2016 Elsevier Inc. All rights reserved.