Vestibular receptors contribute to the cortical auditory evoked potentials

Todd, Neil P. M., Paillard, Aurore, Kluk, Karolina, Whittle, Elizabeth and Colebatch, James G. (2014) Vestibular receptors contribute to the cortical auditory evoked potentials. Hearing Research, 309. pp. 63-74. ISSN 0378-5955

[img] Text
2014a_Todd-et-al_HR.pdf - Published Version
Restricted to Repository staff only

Download (2MB) | Request a copy

Abstract / Description

Acoustic sensitivity of the vestibular apparatus is well-established, but the contribution of vestibular receptors to the late auditory evoked potentials of cortical origin is unknown. Evoked potentials from 500 Hz tone pips were recorded using 70 channel EEG at several intensities below and above the vestibular acoustic threshold, as determined by vestibular evoked myogenic potentials (VEMPs). In healthy subjects both auditory mid- and long-latency auditory evoked potentials (AEPs), consisting of Na, Pa, N1 and P2 waves, were observed in the sub-threshold conditions. However, in passing through the vestibular threshold, systematic changes were observed in the morphology of the potentials and in the intensity dependence of their amplitude and latency. These changes were absent in a patient without functioning vestibular receptors. In particular, for the healthy subjects there was a fronto-central negativity, which appeared at about 42 ms, referred to as an N42, prior to the AEP N1. Source analysis of both the N42 and N1 indicated involvement of cingulate cortex, as well as bilateral superior temporal cortex. Our findings are best explained by vestibular receptors contributing to what were hitherto considered as purely auditory evoked potentials and in addition tentatively identify a new component that appears to be primarily of vestibular origin.

Item Type: Article
Uncontrolled Keywords: acoustic sensitivity; vestibular receptors; cortical auditory
Subjects: 100 Philosophy & psychology > 150 Psychology
Department: School of Social Sciences
Depositing User: Aurore Bardey
Date Deposited: 07 Aug 2020 11:46
Last Modified: 07 Aug 2020 11:46
URI: http://repository.londonmet.ac.uk/id/eprint/5919

Actions (login required)

View Item View Item