Separating mismatch negativity (MMN) response from auditory obligatory brain responses in school‐aged children |
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| Authors: | Kaisa Lohvansuu Jarmo A. Hämäläinen Annika Tanskanen Jürgen Bartling Jennifer Bruder Ferenc Honbolygó Gerd Schulte‐Körne Jean‐Francois Démonet Valéria Csépe Paavo H. T. Leppänen |
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| Affiliation: | 1. Department of Psychology, University of Jyv?skyl?, , Jyv?skyl?, Finland;2. Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University of Munich, , München, Germany;3. Institute for Psychology, Hungarian Academy of Sciences, , Budapest, Hungary;4. Imagerie cérébrale et handicaps neurologiques, INSERM, , Toulouse, France;5. Imagerie cérébrale et handicaps neurologiques, Université de Toulouse, UPS, , Toulouse, France;6. Leenaards Memory Center, Département Neurosciences Cliniques, CHUV and University of Lausanne, , Lausanne, Switzerland |
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| 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. |
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| Keywords: | Language/Speech Children/Infants EEG/ERP MMN EQ paradigm Vowel |
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