他者の身振りを伴う発話観察中の口唇部支配運動野の興奮性変化

Excitability Change of Lip Motor Cortex During Observation of Another Person's Speech with Hand Gesture

崔 春福

成田 知弘

吉田 光演

船瀬 広三

日本運動生理学雑誌

This study was to examine the effect of video clip observation performed by another person who pronounced some words with hand gesture on the excitability of lip motor cortex. Transcranial magnetic stimulation (TMS) was applied to the appropriate spot of motor cortex for orbicularis oris during weak voluntary contraction. We found the significant increase of excitability of lip motor cortex during observation for another person's pronunciation with both-hands gesture compared to those with vocalization only or with one-hand gesture. Mirror neuron system, consisted of Broca area and the primary motor cortex in human brain, would be one of the background neural mechanisms for the present results. Because the emphasized visual inputs during observation of the both-hands gesture possibly made the pronunciation imagery clear. It is suggested that the speech with hand gesture could be an effective method to communicate with other person.

TMS

cortical excitability

vocalization

hand gesture

mirror neuron system

医学 [ 490 ]

日本語

日本運動生理学会

日本運動生理学会

本文データは学協会の許諾に基づきCiNiiから複製したものである

[ISSN] 1340-3036

[NCID] AA11201699

[NAID] 110007356993 ～の異版である