Longitudinal trajectories of the neural encoding mechanisms of speech-sound features during the first year of life.

Autor: Puertollano M; Brainlab - Cognitive Neuroscience Research Group. Department of Clinical Psychology and Psychobiology, University of Barcelona, Catalonia, Spain; Institute of Neurosciences, University of Barcelona, Catalonia, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain., Ribas-Prats T; Brainlab - Cognitive Neuroscience Research Group. Department of Clinical Psychology and Psychobiology, University of Barcelona, Catalonia, Spain; Institute of Neurosciences, University of Barcelona, Catalonia, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain., Gorina-Careta N; Brainlab - Cognitive Neuroscience Research Group. Department of Clinical Psychology and Psychobiology, University of Barcelona, Catalonia, Spain; Institute of Neurosciences, University of Barcelona, Catalonia, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain., Ijjou-Kadiri S; Brainlab - Cognitive Neuroscience Research Group. Department of Clinical Psychology and Psychobiology, University of Barcelona, Catalonia, Spain; Institute of Neurosciences, University of Barcelona, Catalonia, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain., Arenillas-Alcón S; Brainlab - Cognitive Neuroscience Research Group. Department of Clinical Psychology and Psychobiology, University of Barcelona, Catalonia, Spain; Institute of Neurosciences, University of Barcelona, Catalonia, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain., Mondéjar-Segovia A; Brainlab - Cognitive Neuroscience Research Group. Department of Clinical Psychology and Psychobiology, University of Barcelona, Catalonia, Spain; Institute of Neurosciences, University of Barcelona, Catalonia, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain., Dolores Gómez-Roig M; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain; BCNatal - Barcelona Center for Maternal Fetal and Neonatal Medicine, Hospital Sant Joan de Déu and Hospital Clínic), University of Barcelona, Catalonia, Spain., Escera C; Brainlab - Cognitive Neuroscience Research Group. Department of Clinical Psychology and Psychobiology, University of Barcelona, Catalonia, Spain; Institute of Neurosciences, University of Barcelona, Catalonia, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain. Electronic address: cescera@ub.edu.
Jazyk: angličtina
Zdroj: Brain and language [Brain Lang] 2024 Nov; Vol. 258, pp. 105474. Date of Electronic Publication: 2024 Sep 25.
DOI: 10.1016/j.bandl.2024.105474
Abstrakt: Infants quickly recognize the sounds of their mother language, perceiving the spectrotemporal acoustic features of speech. However, the underlying neural machinery remains unclear. We used an auditory evoked potential termed frequency-following response (FFR) to unravel the neural encoding maturation for two speech sound characteristics: voice pitch and temporal fine structure. 37 healthy-term neonates were tested at birth and retested at the ages of six and twelve months. Results revealed a reduction in neural phase-locking onset to the stimulus envelope from birth to six months, stabilizing by twelve months. While neural encoding of voice pitch remained consistent across ages, temporal fine structure encoding matured rapidly from birth to six months, without further improvement from six to twelve months. Results highlight the critical importance of the first six months of life in the maturation of neural encoding mechanisms that are crucial for phoneme discrimination during early language acquisition.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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