Abstract
A study of spontaneous nystagmus was made on 100 normal individuals as well as 326 vertigious patients on first visit.
Both slow phase velosity (degree/S) and frquency (number/S) for intensity, were mesured on electronystagmography recordings. ENG recordings were done under four conditions, i. e., eye closed, eye covered and a performance of mental alerting with eye closed and eye covered. Spontaneous nystagmus was found in 41% nomal individuals and in 66% vertigious patients. In both slow phase velocity and frequency of spontaneous nystagmus, its intensity of vertigious patients was remarkably bigger than that of normal individuals in each condition. Statistically, the significance was recognized at 0.01% of the significance level.
