The auditory evoked-gamma response and its relation with the N1m

Witton, Caroline, Eckert, Mark A., Stanford, Ian M., Gascoyne, Lauren E., Furlong, Paul L., Worthen, Siân F. and Hillebrand, Arjan (2017). The auditory evoked-gamma response and its relation with the N1m. Hearing Research, In pre ,

Abstract

This study explored the patterns of oscillatory activity that underpin the N1m auditory evoked response. Evoked gamma activity is a small and relatively rarely-reported component of the auditory evoked response, and the objective of this work was to determine how this component relates to the larger and more prolonged changes in lower frequency bands. An event-related beamformer analysis of MEG data from monaural click stimulation was used to reconstruct volumetric images and virtual electrode time series. Group analysis of localisations showed that activity in the gamma band originated from a source that was more medial than those for activity in the theta-to-beta band, and virtual-electrode analysis showed that the source of the gamma activity could be statistically dissociated from the lower-frequency response. These findings are in accordance with separate functional roles for the activity in each frequency band, and provide evidence that the oscillatory activity that underpins the auditory evoked response may contain important information about the physiological basis of the macroscopic signals recorded by MEG in response to auditory stimulation.

Publication DOI: https://doi.org/10.1016/j.heares.2017.02.016
Divisions: Life & Health Sciences > Psychology
Life & Health Sciences
Life & Health Sciences > Clinical and Systems Neuroscience
Life & Health Sciences > Vision, Hearing and Language
Life & Health Sciences > Aston Brain Centre
Life & Health Sciences > Pharmacy
Additional Information: © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords: beamformer,cortex,magnetoencephalography,oscillations,Sensory Systems
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2017-02-22
Authors: Witton, Caroline ( 0000-0002-5610-4234)
Eckert, Mark A.
Stanford, Ian M. ( 0000-0002-5677-8538)
Gascoyne, Lauren E.
Furlong, Paul L. ( 0000-0002-9840-8586)
Worthen, Siân F. ( 0000-0003-1980-0932)
Hillebrand, Arjan

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