ABSTRACT:

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Using electroacupuncture in a mirror box, we investigated the changes with illusion of movement in excitation through the F wave. [Subjects and Methods] The subjects were 13 right-handed healthy adults. Electroacupuncture was applied to the right hand, and the F wave of the left hand was measured with and without the mirror, alternately, 4 times. Electroacupuncture was applied to the first dorsal interosseus muscle at a frequency of 1 Hz. The F wave was evoked in the median nerve by supramaximal stimulus eliciting the M wave, and was recorded from the abductor pollicis brevis. [Results] The persistence of F wave and amplitude ratio of F/M increased in the mirror condition, compared with the no mirror condition; however, no significant changes in average latency F wave were found. [Conclusion] We proved that with the mirror, visual information from the mirror, and somatosensory information of muscular movement induced by electroacupuncture, not only recruitment in the excitation of spinal neural function, but did so synchronization.

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