A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Maturation of speech-elicited event-related potentials from birth to 28 months: Typical development with minor effects of dyslexia risk
Tekijät: Navarrete-Arroyo, Sergio; Putkinen, Vesa; Kujala, Teija; Virtala, Paula
Kustantaja: Elsevier BV
Julkaisuvuosi: 2025
Journal: Biological Psychology
Tietokannassa oleva lehden nimi: Biological Psychology
Artikkelin numero: 109050
Vuosikerta: 198
ISSN: 0301-0511
eISSN: 1873-6246
DOI: https://doi.org/10.1016/j.biopsycho.2025.109050
Verkko-osoite: https://doi.org/10.1016/j.biopsycho.2025.109050
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/498764763
This study investigated in a longitudinal setting the maturation of obligatory auditory event-related potentials (ERPs) during infancy and early childhood, comparing the developmental patterns in infants with or without a familial risk of dyslexia. To that end, we recorded ERPs to repetitive speech sounds at birth, 6 months, and 28 months in a sample of ∼200 children over-represented by children at risk for developmental dyslexia. Additionally, we assessed the impact of a music listening intervention on these ERPs. We found that infant P1 and N2 are the most robust ERPs during the first years of life. A distinct, broad infant P1 response was observable already at birth, with a infant P1-N2 pattern emerging by 6 months. Infant P1 amplitude increased from birth to 6 months, whereas its latency decreased from birth to 28 months. Infant N2 latency increased between 6 and 28 months, with no significant changes in amplitude. The control group without familial dyslexia risk exhibited smaller infant N2 amplitudes than the at-risk group at 6 months. No effects of the infant music listening intervention on the ERPs were seen. These results, with a large sample size and longitudinal setting, reflect auditory development, serving as a reference for future studies including clinical groups.
Keywords: Developmental dyslexia; Event-related potentials; Music intervention; N2; Neural speech encoding; P1.
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This work was supported by the Research Council of Finland (grant numbers 276414, 316970, and 346211), Jane and Aatos Erkko Foundation, Ella and Georg Ehrnrooth Foundation, Kela (The Social Insurance Institution of Finland), by personal grants to the first author from the Finnish National Agency of Education (EDUFI Fellowship), the Oskar Öflund Foundation, the Yrjö Jahnsson Foundation and the Finnish Cultural Foundation, and by personal grants to the last author from the Ella and Georg Ehrnrooth Foundation.