Ishibashi Kiyoshige, Ishii Daisuke, Yamamoto Satoshi, Okamoto Yoshitaka, Wakatabi Masahiro, Kohno Yutaka
Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences Hospital, Ibaraki, Japan.
Graduate School of Health Sciences, Ibaraki Prefectural University of Health Sciences, Ibaraki, Japan.
J Mot Behav. 2022;54(2):135-145. doi: 10.1080/00222895.2021.1930993. Epub 2021 Jun 28.
The interhemispheric signal propagation (ISP) obtained by electroencephalography during transcranial magnetic stimulation (TMS) allows for the assessment of the interhemispheric connectivity involved in inhibitory processes. To investigate the functional asymmetry of hemispheres during rapid movement, we compared ISP in the left and right hemispheres during rapid hand movements. In 11 healthy right-handed adults, we delivered TMS to the M1 and recorded ISP from the M1 to the contralateral hemisphere. We found that ISP from the left to right hemisphere during right-hand rapid movement was higher than ISP from the right to left hemisphere during the left-hand rapid movement. These results indicate that the left M1 strongly inhibits the right M1, and that the left hemisphere is dominant for rapid movements as well as sequential movements.
经颅磁刺激（TMS）期间通过脑电图获得的半球间信号传播（ISP）可用于评估参与抑制过程的半球间连接性。为了研究快速运动期间半球的功能不对称性，我们比较了快速手部运动期间左右半球的ISP。在11名健康的右利手成年人中，我们将TMS施加于M1，并记录从M1到对侧半球的ISP。我们发现，右手快速运动期间从左半球到右半球的ISP高于左手快速运动期间从右半球到左半球的ISP。这些结果表明，左侧M1强烈抑制右侧M1，并且左半球在快速运动以及连续运动中占主导地位。
