Oscillatory entrainment of neural activity between inferior frontoparietal cortices alters imitation performance
Oscillatory entrainment of neural activity between inferior frontoparietal cortices alters imitation performance
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下额顶叶皮质之间神经活动的振荡夹带改变了模仿能力
DOI：
10.1016/j.neuropsychologia.2020.107702
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发表时间：
2021
期刊：
影响因子：
2.6
通讯作者：
Izumi Shin-Ichi
中科院分区：
文献类型：
--
作者：
Takeuchi Naoyuki;Terui Yoshino;Izumi Shin-Ichi
当一个人执行目标导向的行动并观察到另一个人的故意行动时，额顶镜网络就会被激活。有人推测，不同的额区和顶区可能共同参与了模仿过程，这一过程将观察到的运动转化为相同的动作。我们通过应用经颅交流电刺激(Tacs)外源性调节额下回和左顶下小叶的振荡神经活动，来确定额顶镜像网络与模仿的关系。总共有45名年轻人参与了这项研究。参与者被随机分配到三个Tacs组(同步、去同步和假；55 GHz被6 GHz包络)。在Tacs前和Tacs中，参与者执行手势匹配任务和手势模仿任务。在左额顶叶皮质应用同步Tacs显著提高了手势匹配和无意义手势模仿的绩效。与基线结果相比，不同步的TAC降低了手势匹配性能。额顶镜像网络各组成部分之间的神经活动的振荡夹带被认为通过调制与额叶皮质的动作目标和顶叶皮质观察到的动作的手段有关的神经信息来改变模仿操作。据我们所知，这是第一个揭示额顶镜像网络各组成部分之间的节奏交流在模仿中起作用的研究。
The frontoparietal mirror network is activated when an individual performs a goal-directed action and observes another person's intentional action. It has been speculated that the distinct frontal and parietal regions might work together to participate in the imitation process, which translates an observed movement into an identical action. We aimed to determine the relationship between the frontoparietal mirror network and imitation by applying transcranial alternating current stimulation (tACS) to exogenously modulate oscillatory neural activity in the left inferior frontal gyrus and the left inferior parietal lobule. In total, 45 young adults participated in this study. The participants were randomly assigned to the three tACS groups (synchronous, desynchronous, and sham; 55 Hz enveloped by 6 Hz). Before and during tACS, the participants performed the gesture matching task and the gesture imitation task. Application of synchronous tACS over the left frontoparietal cortices significantly improved the performance of gesture matching and the meaningless gesture imitation relative to the baseline performance. Desynchronous tACS deteriorated the gesture matching performance relative to the baseline results. The oscillatory entrainment of neural activity between components of the frontoparietal mirror network is considered to alter imitation performance by modulating neural information relating to the goals of actions in the frontal cortex and the means of observed actions in the parietal cortex. To the best of our knowledge, this is the first study that reveals that the rhythmic communication between components of the frontoparietal mirror network has a functional role in imitation.
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