内耳性筋反応に関する研究筋電図による迷路性筋緊張

概要

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Of various muscles of the rabbit in the natural position (e. g. nape, back, and forelimbs), the electromyographical studies were done and the changes in the posture were observed. The results obtained are as follows : 1. On the electromyogram, the spontaneous tonic discharges are obtained in the deep nape muscles (M. rectus capitis posterior major et minor, M. obliquus capitis superior), in the deep back (M. sacrospinalis) and the flixor and extensor of the forelimbs (M. articuloulnaris et Mm. anconaei), However they are not observed in the superficial muscles of the nape and the back (M. trapezius et M. splenius). 2. The postures are changed in labyrinthectomized rabbits following certain principles. 3. In following unilateral labyrinthectomy in the normal, but with removal of cerebrum and cervical nerves (C1∼C4) the tonic discharges are decreased mainly in thn deep nape and back, and the flexor of the forelimb contralaterally, and also in the extensor of the forelimb ipsilaterally. After the bilateral labyrinthectomy, the discharges disappear mostly. 4. Consequently the tonic discharges have relation to the labyrinthine muscle tonus and ch- anges of the posture.
社団法人日本耳鼻咽喉科学会の論文