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| Research article summary (published 29 Jun 2002): |
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Segmenting nonsense: an event-related potential index of perceived onsets in continuous speech.
Full Abstract
Speech segmentation, determining where one word ends and the next begins in continuous speech, is necessary for auditory language processing. However, because there are few direct indices of this fast, automatic process, it has been difficult to study. We recorded event-related brain potentials (ERPs) while adult humans listened to six pronounceable nonwords presented as continuous speech and compared the responses to nonword onsets before and after participants learned the nonsense words. In subjects showing the greatest behavioral evidence of word learning, word onsets elicited a larger N100 after than before training. Thus N100 amplitude indexes speech segmentation even for recently learned words without any acoustic segmentation cues. The timing and distribution of these results suggest specific processes that may be central to speech segmentation.
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Author information
Author/s: Sanders, Lisa D (LD); Newport, Elissa L (EL); Neville, Helen J (HJ);
Affiliation: Department of Psychology, University of Oregon, 1227 University of Oregon, Eugene, Oregon 97403-1227, USA. lsanders(-atsign-)wam.umd.edu
Grants: 5-T32-GM07257 (Agency:United States NIGMS) ; DC00128 (Agency:United States NIDCD) ; DC00167 (Agency:United States NIDCD) ; DC00481 (Agency:United States NIDCD) ; R01 DC000128-24 (Agency:United States NIDCD) ; R01 DC000167-21 (Agency:United States NIDCD) ; R01 DC000167-26 (Agency:United States NIDCD) ; R01 DC000481-12 (Agency:United States NIDCD)
Journal and publication information
Publication Type: Clinical Trial; Journal Article; Research Support, U.S. Gov't, P.H.S.
Journal: Nature neuroscience (Nat Neurosci), published in United States. (Language: eng)
Reference: 2002-Jul; vol 5 (issue 7) : pp 700-3
Dates: Created 2002/06/26; Completed 2002/07/12; Revised 2008/09/11;
PMID: 12068301, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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