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• W2323305596 abstract "Event Abstract Back to Event Mismatch negativity responses to parametrically varied speech and music sounds Berge Osnes1*, H. Nordby1, T. Eichele1 and K. Specht1, 2 1 Department of Biological and Medical Psychology, University of Bergen, Norway 2 Clinical Engineering Department, Haukeland University Hospital, Norway OBJECTIVE:Speech and musical sounds are processed differently based on their spectral and temporal characteristics. Many studies have shown a generally more left lateralized processing for speech, and a right lateralized processing for music. However, neuroimaging studies also often report a bilateral involvement in both speech and timbre processing. A bilateral involvement does however not mean that both hemispheres contribute equally to all aspects of the processing. That is, a difference between speech and music sounds may still exist in the temporal dimension. The objective of this study was to explore the differences in early processing of speech versus musical timbre. This was done using a parametrically graded paradigm in order to investigate the differentiation in early neuronal responses as the stimuli were transformed into either speech or music sounds. METHOD:ERPs were recorded from 17 healthy adults in a passive oddball setting, while participants were reading. In the parametric design, the standard sound (probability of 70%) was a spectral mix of perturbed guitar and CV sounds. Two types of deviants were interspersed randomly with the standard. One type was a consonant-vowel syllable /ta/ and the other a guitar tone (220Hz). For each of the deviant types, we parametrically varied the level of noise perturbation in seven steps ranging from a perturbed noise-sound (step 1) to the original sound (step 7); each of 14 deviants had a probability of 2.2%. RESULTS:MMN was observed in all deviant conditions, with a parametric increase in amplitude for both stimulus categories. There was a lager response in right-sided electrodes for both stimulus categories. The peak latency of the MMN showed an asymmetric response with a faster left sided response for the CV sounds than guitar sounds. This difference in latency between CV and guitar sounds decreased in a graded fashion. The MMN latency for the CV sounds increased gradually in left-sided electrodes and decreased in right-sided electrodes. CONCLUSIONS:These results indicate an overall bilateral processing of both speech and music sounds but with a particular left lateralized sensitivity for early automatic processing of speech sounds. Conference: MMN 09 Fifth Conference on Mismatch Negativity (MMN) and its Clinical and Scientific Applications, Budapest, Hungary, 4 Apr - 7 Apr, 2009. Presentation Type: Poster Presentation Topic: Poster Presentations Citation: Osnes B, Nordby H, Eichele T and Specht K (2009). Mismatch negativity responses to parametrically varied speech and music sounds. Conference Abstract: MMN 09 Fifth Conference on Mismatch Negativity (MMN) and its Clinical and Scientific Applications. doi: 10.3389/conf.neuro.09.2009.05.138 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: 26 Mar 2009; Published Online: 26 Mar 2009. * Correspondence: Berge Osnes, Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway, berge.osnes@psybb.uib.no 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 Berge Osnes H. Nordby T. Eichele K. Specht Google Berge Osnes H. Nordby T. Eichele K. Specht Google Scholar Berge Osnes H. Nordby T. Eichele K. Specht PubMed Berge Osnes H. Nordby T. Eichele K. Specht 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." @default.
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• W2323305596 title "Mismatch negativity responses to parametrically varied speech and music sounds" @default.
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