Influence of motor imagery of oppositional movement of the fingers with differing complexities on the excitability of spinal neural function

Maeda Takenobu, Kado Naoki, Suzuki Toshiaki

doi:10.11422/jscn.43.10

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Other Title

複雑性の異なる手指対立運動の運動イメージが上肢脊髄神経機能の興奮性に及ぼす影響
フクザツセイノコトナルシュシタイリツウンドウノウンドウイメージガジョウシセキズイシンケイキノウノコウフンセイニオヨボスエイキョウ

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Description

This study aimed to determine the influence of motor imagery of finger opposition movements with differing complexities on the excitability of spinal neural function using F-wave analysis. Fifteen healthy subjects were enrolled in this study. F-waves were recorded under the following 4 conditions: at rest; during motor imagery of opposition movement of the right thumb and index finger (task 1); during motor imagery of opposition movement of the right thumb and index, middle, ring, and little fingers (task 2); and during motor imagery of opposition movement of the right thumb and index, ring, middle, and little fingers (task 3). To determine whether the subjects could recollect each task, a questionnaire was distributed after the experiment. The F/M amplitude ratio was significantly higher during task 2 than at rest. F-wave persistence was significantly higher during tasks 1 and 2 than at rest. The questionnaire score was significantly lower for task 3 than for tasks 2 and 1. These results suggest that the excitability of spinal neural function increases during motor imagery of finger opposition movements with differing complexities.

Journal

Japanese Journal of Clinical Neurophysiology

Japanese Journal of Clinical Neurophysiology 43 (1), 10-13, 2015

Japanese Society of Clinical Neurophysiology

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