Event Abstract Back to Event Neural correlates of speaking and listening with altered feedback Naomi Kort1*, Maria Ventura2, John Houde1 and Srikantan Nagarajan1 1 University of California, United States 2 University of California, United States Understanding the role of auditory processing during speech offers insight into the mechanisms of speech production and perception. Functional neuroimaging allows for study of the neural correlates of speech production and the effects of speech production on auditory perception. Evoked activity studies have shown speech causes “speaking induced suppression” (SIS) in auditory cortex and other areas of the superior temporal plane. In this study we explored the dynamics of speech production and auditory perception during single vowel utterances using magnetoencephalography (MEG). Data was collected using a 275-channel biomagnetometer (VSM MedTech, Coquitlam, Canada) and analyzed in the time-frequency domain using the NUTMEG software package. Subjects produced single vowel utterances and heard their voice through headphones in randomly interleaved trials of either unaltered or pitch-shifted voice. In a separate run, subjects passively listened to the recording of their unaltered and pitch-shifted voice. During speech and speech preparation oscillatory power in the beta range (12-30 Hz) decreased over sensorimotor cortex, representing motor preparation and execution. In both the speaking and listening conditions, voice onset caused event related desynchronization (ERD) in auditory areas (superior temporal gyrus). However, the ERD was significantly greater in the listening condition than the speaking condition. This difference in activity demonstrates speaking induced suppression in the beta band. No difference in beta band power between speaking and listening was identified over auditory areas in the pitch-shifted condition. These results suggest that neural activity in auditory cortex is modulated with expectation of auditory signal. Conference: Biomag 2010 - 17th International Conference on Biomagnetism , Dubrovnik, Croatia, 28 Mar - 1 Apr, 2010. Presentation Type: Poster Presentation Topic: Sensory Processing and Functional Connectivity Citation: Kort N, Ventura M, Houde J and Nagarajan S (2010). Neural correlates of speaking and listening with altered feedback. Front. Neurosci. Conference Abstract: Biomag 2010 - 17th International Conference on Biomagnetism . doi: 10.3389/conf.fnins.2010.06.00192 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 29 Mar 2010; Published Online: 29 Mar 2010. * Correspondence: Naomi Kort, University of California, San Francisco, United States, naomi.kort@gmail.com Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Naomi Kort Maria Ventura John Houde Srikantan Nagarajan Google Naomi Kort Maria Ventura John Houde Srikantan Nagarajan Google Scholar Naomi Kort Maria Ventura John Houde Srikantan Nagarajan PubMed Naomi Kort Maria Ventura John Houde Srikantan Nagarajan Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.