Exploration du système vestibulaire

This last decade, the methods of investigation of the vestibular system function have considerably improved. In France videonystagmography have replaced electrooculography, providing reliable recordings of spontaneous and induced 3-D eye movements. New tests of canal horizontal and otolith pathways have been developed. These tests are crucial to explore not only the horizontal semicircular canals but also other peripheral vestibular receptors. Balance can be probed using moveable and motorized platforms. Finally, oculomotor tests (saccadic and pursuit eye movements) are helpful for the diagnosis of potential central vestibular dysfunction. Therefore, exploration of vertigo should no more be explored by caloric and horizontal rotatory tests alone. Neurootologic tests should be undertaken to help physicians in establishing the etiologic diagnosis of disequilibrium and vertigo and to adequately determine the indications for MRI.