N1 response attenuation and the mismatch negativity (mmn) to within- and across-category phonetic contrasts

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dc.creatorDaniel Márcio Rodrigues Silva
dc.creatorDanilo Barbosa Melges
dc.creatorRui Rothe-Neves
dc.date.accessioned2023-11-11T01:02:00Z
dc.date.accessioned2025-09-09T00:22:55Z
dc.date.available2023-11-11T01:02:00Z
dc.date.issued2017-03-24
dc.identifier.doihttps://doi.org/10.1111/psyp.12824
dc.identifier.issn1469-8986
dc.identifier.urihttps://hdl.handle.net/1843/60830
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPsychophysiology
dc.rightsAcesso Restrito
dc.subjectCategorização (Linguística)
dc.subjectCircuitos neurais
dc.subjectPercepção da fala
dc.subject.otherERPs
dc.subject.otherMismatch negativity (MMN)
dc.subject.otherN1
dc.subject.otherAdaptation
dc.subject.otherLanguage/speech
dc.subject.otherCategorization
dc.titleN1 response attenuation and the mismatch negativity (mmn) to within- and across-category phonetic contrasts
dc.typeArtigo de periódico
local.citation.epage600
local.citation.issue4
local.citation.spage591
local.citation.volume54
local.description.resumoAccording to the neural adaptation model of the mismatch negativity (MMN), the sensitivity of this event-related response to both acoustic and categorical information in speech sounds can be accounted for by assuming that (a) the degree of overlapping between neural representations of two sounds depends on both the acoustic difference between them and whether or not they belong to distinct phonetic categories, and (b) a release from stimulus-specific adaptation causes an enhanced N1 obligatory response to infrequent deviant stimuli. On the basis of this view, we tested in Experiment 1 whether the N1 response to the second sound of a pair (S2) would be more attenuated in pairs of identical vowels compared with pairs of different vowels, and in pairs of exemplars of the same vowel category compared with pairs of exemplars of different categories. The psychoacoustic distance between S1 and S2 was the same for all within-category and across-category pairs. While N1 amplitudes decreased markedly from S1 to S2, responses to S2 were quite similar across pair types, indicating that the attenuation effect in such conditions is not stimulus specific. In Experiment 2, a pronounced MMN was elicited by a deviant vowel sound in an across-category oddball sequence, but not when the exact same deviant vowel was presented in a within-category oddball sequence. This adds evidence that MMN reflects categorical phonetic processing. Taken together, the results suggest that different neural processes underlie the attenuation of the N1 response to S2 and the MMN to vowels.
local.identifier.orcidhttps://orcid.org/0000-0002-8896-8862
local.identifier.orcidhttps://orcid.org/0000-0001-7884-9205
local.identifier.orcidhttps://orcid.org/0000-0002-5419-3827
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICA
local.publisher.departmentFALE - FACULDADE DE LETRAS
local.publisher.initialsUFMG

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