Event Abstract Back to Event Word-elicited MMN is sensitive to gap insertion Alessandro Tavano1*, Sabine Grimm2, J. Costa-Faidella2, L. Slabu2 and C. Escera2 1 Department of Child Neuropsychiatry and Neurorehabilitation, “Eugenio Medea” Scientific Institute, Italy 2 Department of Psychiatry and Clinical Psychobiology, University of Barcelona, Spain The phenomenon of lexical Representational Negativity (RN) refers to MMN to words being higher in amplitude than MMN to pseudowords. The nature of such enhancement is currently under investigation. To advance the discussion, in Experiment 1 we replicated the finding of lexical RN with bisyllabic words and pseudowords in fourteen Spanish native speakers, using an orthogonal oddball paradigm to match the physical features of a word deviant in the context of a pseudoword standard with respect to a pseudoword deviant in the context of a word standard. Results confirm the detection of a lexical RN for Spanish in the time window 160-180 ms after deviant onset, with the MMN to a word deviant being more frontally distributed than MMN to a non-word deviant. In experiments 2 and 3, we probed the nature of lexical RN by testing its sensitivity to the insertion of an intersyllabic silent gap in two gap duration conditions: 20 ms and 120 ms. We hypothesized that the lexical RN would resist the silent 20 ms gap if it was reflecting higher-order, lexical-conceptual processes, but not the 120 ms gap condition which perceptually violates language-specific constraints. Results confirm that with a 120 ms gap no significant difference in amplitude between MMNs to words and pseudowords is evident, and they present with a similar more central distribution. Further, a 20 ms silent gap seems to be sufficient to cancel out the lexical RN effect, suggesting that it might reflect a first stage of trace matching in long-term memory driven by phonological and prosodic rather than lexical-conceptual information. 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: Tavano A, Grimm S, Costa-Faidella J, Slabu L and Escera C (2009). Word-elicited MMN is sensitive to gap insertion. Conference Abstract: MMN 09 Fifth Conference on Mismatch Negativity (MMN) and its Clinical and Scientific Applications. doi: 10.3389/conf.neuro.09.2009.05.104 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: Alessandro Tavano, Department of Child Neuropsychiatry and Neurorehabilitation, “Eugenio Medea” Scientific Institute, Bosisio Parini, Italy, alessandro.tavano@bp.lnf.it 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 Alessandro Tavano Sabine Grimm J. Costa-Faidella L. Slabu C. Escera Google Alessandro Tavano Sabine Grimm J. Costa-Faidella L. Slabu C. Escera Google Scholar Alessandro Tavano Sabine Grimm J. Costa-Faidella L. Slabu C. Escera PubMed Alessandro Tavano Sabine Grimm J. Costa-Faidella L. Slabu C. Escera 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.