Hirose Satoshi, Oouchida Yutaka, Matsumura Michikazu, Naito Eiichi
Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan.
Neuroreport. 2009 Oct 28;20(16):1477-80. doi: 10.1097/WNR.0b013e3283322aef.
We examined whether visual information on the dynamic aspect of the actions performed by an individual can influence an observer's action. Sixteen participants cyclically generated an isometric precision grip force with their right thumb and index finger in synchronization with the contraction (in-phase) or relaxation phase of an experimenter's hand, foot, and mouth movements presented in videos. Visual information of the hand action significantly enhanced the observer's grip force, and this enhancement exclusively occurred during the in-phase condition. These results suggest that the effector matching between the observed and the performed actions and the temporal coincidence in the movement phase are the key factors when visual information on the dynamics of the action of an individual influences the observer's action.
我们研究了关于个体所执行动作动态方面的视觉信息是否会影响观察者的动作。16名参与者用右手拇指和食指循环产生等长精确握力，与视频中呈现的实验者手部、脚部和口部动作的收缩（同相）或放松阶段同步。手部动作的视觉信息显著增强了观察者的握力，并且这种增强仅在同相条件下出现。这些结果表明，当关于个体动作动态的视觉信息影响观察者的动作时，观察到的动作与执行的动作之间的效应器匹配以及运动阶段的时间一致性是关键因素。
