Caloric Testの検討:ENG記録を行う際の検査条件について

概要

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The authors investigated which condition of the eyes was most suitable for recording the nystagmus by electronystagmograph when carrying out the caloric test by the irrigation of 30°C for 40 sec. according to Hallpike. Measurements were made with the eyes open, closed, and Frenzel's spectacles.<BR>The results obtained were as follows.<BR>1. The magnitude of nystagmic reaction, presented by the total amplitude, with the eyes open was less than a third of those of the two other conditions. Namely, the nystagmic reaction with the eyes open was too much suppressed to be adopted as the test condition.<BR>2. The amplitude- and frequency- curve with the eyes closed revealed the remarkable fluctuation, which was thought to be attributed to a distortion of nystagmic reaction.<BR>From these it was concluded that the condition with the eyes opened under Frenzel's spectacles without illuminating was most suitable.
耳鼻と臨床会の論文