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首页> 外文期刊>The European Journal of Neuroscience >The integration of cortical and behavioural dynamics during initial learning of a motor task.
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The integration of cortical and behavioural dynamics during initial learning of a motor task.

机译：最初学习运动任务时，皮层和行为动力学的整合。

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摘要

Here we test the hypothesis that frequency and topographically specific changes in the strength of functional cortico-cortical coupling occur during the acquisition of a completely new task. To this end we studied the behavioural and cortical dynamics of a bimanual multifrequency coordination pattern during which one hand moved at twice the frequency of the other hand. This pattern represents a noninherent assignment and necessitates training before appropriate interlimb decoupling takes place. Results showed that acquisition of the multifrequency task was associated with an improved behavioural output that matched specific changes in the electroencephalogram dynamics. In particular, practice of the coordination pattern was accompanied by a decrease in coherence between the primary sensorimotor regions, and over the midline area in the alpha and beta bands, respectively, along with an increase in functional interhemispheric coupling between the prefrontal areas in the gamma band. These data suggest that the strength of cortico-cortical connectivity is adaptively modified across regions and across frequencies during early learning as the functional couplings are created and optimized for the purpose of movement execution.
机译：在这里，我们测试的假设是，在完成一项全新任务期间，功能性皮质-皮质耦合强度会发生频率和地形上的特定变化。为此，我们研究了双手多频协调模式的行为和皮质动力学，在该模式下，一只手以另一只手的两倍频率运动。此模式表示非固有的分配，需要进行适当的插值解耦之前进行培训。结果表明，多频任务的获得与行为改进输出相关，该行为输出与脑电图动力学的特定变化相匹配。特别是，协调模式的实践伴随着主要感觉运动区域之间以及分别在α和β带中线区域之间的相干性降低，以及γ前额叶区域之间的功能性半球间耦合增加带。这些数据表明，在早期学习过程中，随着运动耦合的产生和优化，功能性耦合被跨区域和跨频率自适应地修改了皮质-皮质连接的强度。

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