Effects of the differences in mental states on the mirror system activities when observing hand actions
Effects of the differences in mental states on the mirror system activities when observing hand actions
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DOI：
10.1186/s40101-018-0192-8
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发表时间：
2019-01-03
影响因子：
3.1
通讯作者：
Higuchi, Shigekazu
中科院分区：
文献类型：
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作者：
Ikeda, Yuki;Nishimura, Yuki;Higuchi, Shigekazu
背景技术众所周知，镜像系统的活动与对动作意图的模仿和理解有关。据报道，镜像系统的活动对于模仿和理解动作意图的观察比简单观察的活动更高。然而，促进镜像系统活动的观察，无论是旨在模仿动作的观察，还是理解动作意图的观察，迄今为止尚未明确。方法对高度促进镜像系统活动的动作的观察类型进行了调查。参与者是惯用右手的大学生（N=23）。他们按照三种类型的指令观察显示手部动作的视频：（1）观察旨在理解动作意图的视频（动作理解，AU），观察旨在模仿手部动作的视频（假想模仿，II），以及无任何意图地观察视频（观察，OB）。测量观察期间的脑电波，计算大脑中央区和枕叶区8-10Hz（下μ/）和10-12Hz（上μ/）的抑制率。使用每个区域的重复测量方差分析来比较条件之间的抑制率。结果在10-12Hz的中心区域中条件的主效应。 AU条件下的抑制程度显着大于SO条件(p
BackgroundIt is known that the activities of the mirror system are related to imitation and understanding of the intention of an action. It has been reported that the activity of the mirror system is higher for observations for imitating and understanding the intention of an action than for simple observations. However, observations that facilitate the mirror system's activities, if they are observations intending to imitate an action or observations for understanding the intention of an action, have not been clarified to date.MethodsThe types of observations of actions that highly facilitate mirror system activities were investigated. Participants were right-handed university students (N=23). They observed videos showing hand actions following three types of instructions: (1) to observe the videos intending to understand the intention of the action (action understanding, AU), to observe the videos intending to imitate the hand action (imaginarily imitation, II), and to observe the videos without any intention (observation, OB). Brain waves during observation were measured, and the suppression rate of 8-10Hz (lower mu/) and 10-12Hz (upper mu/) in the central and occipital regions of the brain was calculated. The rate of suppression was compared among the conditions using a repeated measures analysis of variance for each region.ResultsThere was a main effect of the condition in the central region in 10-12Hz. The degree of suppression in the AU condition was significantly larger than SO condition (p