交差指錯覚における身体アウェアネスの異なる神経プロセス

交差指錯覚における身体アウェアネスの異なる神経プロセス
著者　関根崇泰、茂木健一郎
２００９年３月２５日付けのイギリスの科学雑誌
「ニューロレポート」に掲載されました。

Sekine, T. and Mogi, K. (2009)
Distinct neural processes of bodily awareness in crossed fingers illusion.　Neuroreport 20, 467-472

Abstract

The tactile reassignment process supports the flexible and dynamic changes of body schema in various situations such as those involving tool use. Here, we show that there exist two distinct neural processes in the dynamical reassignment process. One process is involved in identifying the body part where the tactile stimuli are applied, whereas the other is involved in the　assignment of the tactile stimuli in the external space including one's body. These processes, combined together, would facilitate the quick and appropriate acquisition of information from the environment, resulting in the speedy spatial perception and execution of motor activities. In addition, we show that the body posture affects the accuracy of tactile localization in the crossed fingers illusion.

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