[Equilibrium function in Menière's disease].

In order to assess objectively the equilibrium function in Ménière's disease, stabilographic measurements were performed in combination with a battery of provocative tests. In 55 patients, static and dynamic equilibrium was investigated on a differential basis and compared with the data calculated for healthy people of the same age. In Ménière's disease, patients showed a decline of the equilibrium function (P less than 0.001) between attacks, the decline enhancing with the duration of the disease. It was found that one of the early signs of functional insufficiency of the equilibrium function in Ménière's disease was a poor correlation between the level of the stimulus presented and that of the response. At early stages of Ménière's disease, the equilibrium function deteriorated due to dynamic components and at stage III due to both dynamic and static components.