前垂直半規管冷温剌戟による眼球振盪の実験的研究

抄録

A considerable amount of research has been reported on the caloric test for the function of the horizontal semicircular canal, but little work has been done on the caloric test for those of the vertical semicircular canal. After a special surgical operation of the semicircular canal, the superior semicircular canal of rabbit was examined under various kinds of caloric stimuli by using the new apparatus which the author had made to give caloric stumulus to the semicircular canal. It was observed that severe vertical nystagmus appeared when the unilateral superior canal was stimulated and slight rotatory nystagmus appeared when the bilateral superior canal was done simultaneously. On the other hand when caloric stimulus was given to the unilateral superior semicircular canal, rotatory nystagmus appeared in man. Concerning with this reason the author presumed that it might be caused by the difference of anatomical situation of the semicircular canal and the eyeball between in men and in rabbits.