温度性眼振の発現機序に関する実験的研究

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書誌事項

タイトル別名
  • EXPERIMENTAL STUDIES ON THE MECHANISM OF NYSTAGMUS INDUCED BY CALORIC STIMULATION
  • オンドセイガンシン ノ ハツゲン キジョ ニ カンスル ジッケンテキ ケンキュウ
公開日
1964
資源種別
journal article
DOI
  • 10.3950/jibiinkoka.67.5_683
公開者
一般社団法人 日本耳鼻咽喉科頭頸部外科学会

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説明

During irrigation of water in different temperature into external auditory meatus of rabbit and man, the temperature of external auditory meatus, ampulla and crus of horizontal semicircular canalwas measured to explore the heat conduction from external auditory meatus to those parts and the relation between temperature changes and nystagmus.<br>The duration of nystamus was prolonged when external auditory meatus was cut. On the other hand, the duration of nystagmus of on side was shortened when the cervical ganglion of sympathetic system of that side was extirpated.<br>These facts indicate that the blood circulation shows strong influence.<br>The curves of temperature differences were compared during caloric test with the combination of tilt test. During cold stimulation at normal position and heat stimulation at reversed position, both curves showed very similar tendency. Also during cold stimulation at reversed position and heat stimulation at normal position, the curves showed the same form.<br>Nystagmus continued while the temperature of the irrigated water was 28°C, and stopped when the temperature was 31°C and 43°C. These results show that nystagmus is dependent mainly upon the each direction of endolymphatic stream, ampullofugal and ampullopetal which has different nature, secondly upon otholiths. and sligh- tly upon temperature differences at different parts of labyrinth.

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