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Synchronised vestibular signals increase the P300 event-related potential elicited by auditory oddballs

Schmidt-Kassow, Maren, Wilkinson, David T., Denby, Emma, Ferguson, Heather J. (2016) Synchronised vestibular signals increase the P300 event-related potential elicited by auditory oddballs. Brain Research, 1648 (Part A). pp. 224-231. ISSN 0006-8993. (doi:10.1016/j.brainres.2016.07.019) (KAR id:56772)

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The perception of beat within an auditory rhythm can be facilitated when accompanied by synchronised movements. Electrophysiological investigation shows that this facilitatory effect is associated with a larger P300 amplitude. It has remained unclear, however, which movement-related processes drive this P300 effect. To investigate whether vestibular signals play a role, we administered alternating, sub-sensory (mean =.3mA) galvanic current to the vestibular nerves of participants while they counted the number of oddballs presented in a stream of tones played at a rate of 1Hz. Consistent with a vestibular effect, the P300 elicited by the oddballs was increased during stimulation relative to a sham condition, but only when the frequency of the alternating current matched that at which the tones were played. This finding supports the general idea that the vestibular system is involved in audio-motor synchronisation and is the first to show by electrophysiological means that it influences cognitive processes involved in beat perception.

Item Type: Article
DOI/Identification number: 10.1016/j.brainres.2016.07.019
Uncontrolled keywords: Auditory-motor synchronization; Attention; ERP; Balance; Neuro-modulation
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Divisions > Division of Human and Social Sciences > School of Psychology
Depositing User: David Wilkinson
Date Deposited: 09 Aug 2016 09:52 UTC
Last Modified: 16 Feb 2021 13:36 UTC
Resource URI: (The current URI for this page, for reference purposes)
Ferguson, Heather J.:
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