Longitudinal trajectories of the neural encoding mechanisms of speech-sound features during the first year of life
Por:
Puertollano-Rodríguez M, Ribas-Prats T, Gorina N, Ijjou S, Arenillas-Alcón S, Mondéjar-Segovia A, Gómez-Roig MD and Escera C
Publicada:
1 nov 2024
Ahead of Print:
1 sep 2024
Resumen:
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.
Filiaciones:
Puertollano-Rodríguez 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 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 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
:
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
Gómez-Roig MD:
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
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