Caloric Response Decline 現象に関する実験的研究

概要

論文の詳細を見る
It has been said that when the rotatoric stimulations are given repeatedly, the duration of postrotatoric nystagmus decrease, but on the caloric stimulation such phenomenon dose not occur, however even in case of the caloric stimulation, response decline (R. D.) phenomenon may be caused by its different test conditions. Consequently experiments were performed on rabbits on this problem, and following results are obtained.1) R. D. phenomenon is liable to occurred even by one-sided cold or warm irrigation at a certain interval.2) The appearance of R. D. phenomenon depends on the temperature of irrigating water but has very littele dependance on the amount of water.3) Warm water produces R. D. phenomenon more easily than cold water.4) More remarkable R. D. phenomenon is caused by respective simultaneous irrigation of cold and warm water into both ears than one-sided irrigation. This may be one of the reasons that the appearance of R. D. phenomenon at the rotation test is attributed to the simultaneous stimulation of bilateral labyrinths.5) R. D. phenomenon has no relationship with the external auditory meatus.6) The nystagmus must always exist on the appearance of R. D. phenomenon.7) When R. D. phenomenon appears by repeated irrigation of one ear, the nystagmus duration due to the opposite ear decrease.
社団法人日本耳鼻咽喉科学会の論文