A new neurogenic vestibular evoked potential (N6) recorded with the use of air-conducted sound

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
Eleftherios S PapathanasiouSavvas S Papacostas

Abstract

Neurogenic vestibular evoked potentials that are recorded from the scalp have so far been recorded in the form of N3 (click air-conducted), N5 (tone air-conducted), and P10 (bone-conducted stimulus) waveforms. The purpose of this study is to find other vestibular waveforms obtained with air-conducted sound. The experiments were organized into 4 parts: 1) topographic scalp mapping; 2) determining the consistency in appearance of candidate vestibular waveforms; 3) further characteristics such as their relationship to vestibular evoked myogenic potentials, sensitivity to 5-kHz tone, and threshold of activation; and (D) recording of the new vestibular waveforms in a case of hearing loss. A montage was discovered, O2-P3 and O1-P4 with left and right ear stimulation respectively, that yielded a negative wave at 6 milliseconds after stimulus onset and was labeled N6. It is not a vestibular evoked myogenic potential, disappears with 5-kHz tone stimuli, has a high threshold of stimulation, and is present in a case of hearing loss. A new vestibular waveform is discovered that probably originates at or near the midbrain based on its latency. Together with the previously mentioned waves, lesions along the vestibular pathway can now be loca...Continue Reading

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Citations

Mar 15, 2020·Physiological Reports·Vicenç Pascual-RubioEnric Figuerola-Massana
Oct 9, 2021·Frontiers in Neurology·Estelle NakulChristophe Lopez

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