[Vestibular evoked potentials. Diagnostic trends].
The contribution of short-latency evoked potentials to the exploration of auditory, visual and somatosensory neurosensory pathways is capital. The determination of short-latency vestibular evoked potentials has encountered many difficulties, mainly due to the necessity to find a specific, very short stimulation in order to select and synchronize the vestibular nerve fibers. Recent studies in animals have demonstrated short-latency potentials evoked by angular accelerations, linear accelerations or electric shocks on the round window. The generators of these potentials seem to be located in the vestibular nerve and nuclei. Electric stimulations of the internal ear have the advantage of providing a study of the peripheral vestibular pathways separately on both sides, while accelerations involve both vestibula, which probably makes the interpretation of data very difficult.
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Service ORL, CHR de Nantes, Hôtel Dieu.
Desmadryl
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Tran Ba Huy
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D000161:Acoustic Stimulation; D000818:Animals; D004558:Electric Stimulation; D005072:Evoked Potentials, Auditory; D006168:Guinea Pigs; D006801:Humans; D012405:Round Window, Ear; D015837:Vestibular Diseases / Q000175:diagnosis; D014725:Vestibular Nerve / Q000502:physiology*
Potentiels évoqués vestibulaires. Perspectives diagnostiques.