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  Longitudinal trajectories of electrophysiological mismatch responses in infant speech discrimination differ across speech features

Werwach, A., Männel, C., Obrig, H., Friederici, A. D., & Schaadt, G. (2022). Longitudinal trajectories of electrophysiological mismatch responses in infant speech discrimination differ across speech features. Developmental Cognitive Neuroscience, 56: 101127. doi:10.1016/j.dcn.2022.101127.

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 Creators:
Werwach, Annika1, Author
Männel, Claudia1, 2, 3, Author              
Obrig, Hellmuth1, 4, Author              
Friederici, Angela D.3, Author              
Schaadt, Gesa3, 5, Author              
Affiliations:
1Clinic for Cognitive Neurology, University of Leipzig, Germany, ou_persistent22              
2Department of Audiology and Phoniatrics, Charité University Medicine Berlin, Germany, ou_persistent22              
3Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              
4Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
5Department of Education and Psychology, FU Berlin, Germany, ou_persistent22              

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Free keywords: Mismatch response; Event-related potentials; Speech discrimination; Language development; Developmental trajectory; Infancy
 Abstract: Infants rapidly advance in their speech perception, electrophysiologically reflected in the transition from an immature, positive-going to an adult-like, negative-going mismatch response (MMR) to auditory deviancy. Although the MMR is a common tool to study speech perception development, it is not yet completely understood how different speech contrasts affect the MMR’s characteristics across development. Thus, a systematic longitudinal investigation of the MMR’s maturation depending on speech contrast is necessary. We here longitudinally explored the maturation of the infant MMR to four critical speech contrasts: consonant, vowel, vowel-length, and pitch. MMRs were obtained when infants (n = 58) were 2, 6 and 10 months old. To evaluate the maturational trajectory of MMRs, we applied second-order latent growth curve models. Results showed positive-going MMR amplitudes to all speech contrasts across all assessment points that decreased over time towards an adult-like negativity. Notably, the developmental trajectories of speech contrasts differed, implying that infant speech perception matures with different rates and trajectories throughout the first year, depending on the studied auditory feature. Our results suggest that stimulus-dependent maturational trajectories need to be considered when drawing conclusions about infant speech perception development reflected by the infant MMR.

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Language(s): eng - English
 Dates: 2022-02-232021-11-122022-06-202022-06-222022-08
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1016/j.dcn.2022.101127
Other: online ahead of print
PMID: 35763917
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Title: Developmental Cognitive Neuroscience
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 56 Sequence Number: 101127 Start / End Page: - Identifier: ISSN: 1878-9293
CoNE: https://pure.mpg.de/cone/journals/resource/1878-9293