30P-B-11 手指の随意運動における割り込み停止動作に関連した脳電位(医療物理,一般講演)

概要

論文の詳細を見る
In the human voluntary movement, it is supposed that the brain plans movement maneuver before initiation of the movement. If some obstruction for the movement occurs during the movement, the central nervous system (CNS) has to modem the planning of the movement. However, the neural process in the CNS of the motor modification during the on-going voluntary movement is still poorly understood. In the present study, we investigated the brain activity related to the inhibitory motor control triggered by a stop-signal. The isometric index finger movement measured with a force sensor was conducted. The subject was trained to increase the index finger force from 0 N to 2 N with watching the force indicator on the PC monitor After the training, the subject conducted the go-stop task, in which the subject started to increase the force with a go-signal and held the force immediately after the stop-signal. The delay of the stop-signal from the go-signal (stop-signal delay, SSD) was set at 0-500 ms with 50 ms intervals randomly. The finger force was able to be held before reaching the target force when SSD was less than 200 ms, whereas not when SSD was more than or equal to 200 ms. We measured electroencephalogram (EEG) during the go-stop task of the isometric finger movement with 50 ms or 200 ms SSD. A negative peak of EEG was observed on a fronto-central scalp around 250 ms after the stop-signal in the condition of 50 ms SSD, whereas a negative peak of EEG was observed on the broad area centering the vertex of the scalp around 200 ms after the stop-signal in the condition of 200 ms SSD. The result indicated that the fronto-central cortical area was involved in the inhibitory control of the voluntary finger movement.
2011-10-29

30P-B-11 手指の随意運動における割り込み停止動作に関連した脳電位(医療物理,一般講演)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク