title: Separating mismatch negativity (MMN) response from auditory obligatory brain responses in school-aged children.
abstract: Mismatch negativity (MMN) overlaps with other auditory event-related potential (ERP) components. We examined the ERPs of 50 9- to 11-year-old children for vowels /i/, /y/ and equivalent complex tones. The goal was to separate MMN from obligatory ERP components using principal component analysis and equal probability control condition. In addition to the contrast of the deviant minus standard response, we employed the contrast of the deviant minus control response, to see whether the obligatory processing contributes to MMN in children. When looking for differences in speech deviant minus standard contrast, MMN starts around 112 ms. However, when both contrasts are examined, MMN emerges for speech at 160 ms whereas for nonspeech MMN is observed at 112 ms regardless of contrast. We argue that this discriminative response to speech stimuli at 112 ms is obligatory in nature rather than reflecting change detection processing.
authors.affiliation: Department of Psychology, University of Jyväskylä, Jyväskylä, Finland. kaisa.lohvansuu@jyu.fi
authors.forename: Kaisa
authors.initials: K
authors.lastname: Lohvansuu
authors.forename: Jarmo A
authors.initials: JA
authors.lastname: Hämäläinen
authors.forename: Annika
authors.initials: A
authors.lastname: Tanskanen
authors.forename: Jürgen
authors.initials: J
authors.lastname: Bartling
authors.forename: Jennifer
authors.initials: J
authors.lastname: Bruder
authors.forename: Ferenc
authors.initials: F
authors.lastname: Honbolygó
authors.forename: Gerd
authors.initials: G
authors.lastname: Schulte-Körne
authors.forename: Jean-Francois
authors.initials: JF
authors.lastname: Démonet
authors.forename: Valéria
authors.initials: V
authors.lastname: Csépe
authors.forename: Paavo H T
authors.initials: PH
authors.lastname: Leppänen
mesh_terms: D001921:Brain / Q000502:physiology*; D002648:Child; D004569:Electroencephalography / Q000295:instrumentation / Q000379:methods*; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D025341:Principal Component Analysis; D013067:Speech Perception / Q000502:physiology; D013997:Time Factors