功能磁共振成像
运动学习
运动技能
神经科学
运动区
大脑活动与冥想
初级运动皮层
运动皮层
运动活动
代表(政治)
心理学
神经活动
计算机科学
人工智能
生物
脑电图
政治
内分泌学
刺激
法学
政治学
作者
Tobias Wiestler,Jörn Diedrichsen
出处
期刊:eLife
[eLife Sciences Publications Ltd]
日期:2013-07-09
卷期号:2
被引量:229
摘要
Motor-skill learning can be accompanied by both increases and decreases in brain activity. Increases may indicate neural recruitment, while decreases may imply that a region became unimportant or developed a more efficient representation of the skill. These overlapping mechanisms make interpreting learning-related changes of spatially averaged activity difficult. Here we show that motor-skill acquisition is associated with the emergence of highly distinguishable activity patterns for trained movement sequences, in the absence of average activity increases. During functional magnetic resonance imaging, participants produced either four trained or four untrained finger sequences. Using multivariate pattern analysis, both untrained and trained sequences could be discriminated in primary and secondary motor areas. However, trained sequences were classified more reliably, especially in the supplementary motor area. Our results indicate skill learning leads to the development of specialized neuronal circuits, which allow the execution of fast and accurate sequential movements without average increases in brain activity.
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