Abstract
The labyrinthine status before and after episodes of Meniere's disease was investigated by the acceleration-deceleration test (±2, 4, 6, 8, 10°/sect2, 10") using Contraves' computerized rotary chair system. The difference in duration between nystagmus induced by acceleratory stimulation and nystagmus by deceleratory stimulation was used as an indicator to observe the clinical course of 10 patients with unilateral Meniere's disease.As a rule, ipsilateral labyrinthine preponderance appeared in the pre-episodic stage, and contralateral labyrinthine preponderance was observed in the postepisodic stage. If the interval until the next attack was long, contralateral labyrinthine preponderance disappeared or changed into the vestibular recruitment type.It was thought that ipsilateral labyrinthine preponderance was an indicator to predict the next attack, and the vestibular recruitment type showed a stabilized state of the labyrinth.
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