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Speech perception at birth: The brain encodes fast and slow temporal information
Speech perception is constrained by auditory processing. Although at birth infants have an immature auditory system and limited language experience, they show remarkable speech perception skills. To assess neonates’ ability to process the complex acoustic cues of speech, we combined near-infrared sp...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Association for the Advancement of Science
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7439442/ https://www.ncbi.nlm.nih.gov/pubmed/32832669 http://dx.doi.org/10.1126/sciadv.aba7830 |
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author | Cabrera, Laurianne Gervain, Judit |
author_facet | Cabrera, Laurianne Gervain, Judit |
author_sort | Cabrera, Laurianne |
collection | PubMed |
description | Speech perception is constrained by auditory processing. Although at birth infants have an immature auditory system and limited language experience, they show remarkable speech perception skills. To assess neonates’ ability to process the complex acoustic cues of speech, we combined near-infrared spectroscopy (NIRS) and electroencephalography (EEG) to measure brain responses to syllables differing in consonants. The syllables were presented in three conditions preserving (i) original temporal modulations of speech [both amplitude modulation (AM) and frequency modulation (FM)], (ii) both fast and slow AM, but not FM, or (iii) only the slowest AM (<8 Hz). EEG responses indicate that neonates can encode consonants in all conditions, even without the fast temporal modulations, similarly to adults. Yet, the fast and slow AM activate different neural areas, as shown by NIRS. Thus, the immature human brain is already able to decompose the acoustic components of speech, laying the foundations of language learning. |
format | Online Article Text |
id | pubmed-7439442 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-74394422020-08-20 Speech perception at birth: The brain encodes fast and slow temporal information Cabrera, Laurianne Gervain, Judit Sci Adv Research Articles Speech perception is constrained by auditory processing. Although at birth infants have an immature auditory system and limited language experience, they show remarkable speech perception skills. To assess neonates’ ability to process the complex acoustic cues of speech, we combined near-infrared spectroscopy (NIRS) and electroencephalography (EEG) to measure brain responses to syllables differing in consonants. The syllables were presented in three conditions preserving (i) original temporal modulations of speech [both amplitude modulation (AM) and frequency modulation (FM)], (ii) both fast and slow AM, but not FM, or (iii) only the slowest AM (<8 Hz). EEG responses indicate that neonates can encode consonants in all conditions, even without the fast temporal modulations, similarly to adults. Yet, the fast and slow AM activate different neural areas, as shown by NIRS. Thus, the immature human brain is already able to decompose the acoustic components of speech, laying the foundations of language learning. American Association for the Advancement of Science 2020-07-22 /pmc/articles/PMC7439442/ /pubmed/32832669 http://dx.doi.org/10.1126/sciadv.aba7830 Text en Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/ https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Cabrera, Laurianne Gervain, Judit Speech perception at birth: The brain encodes fast and slow temporal information |
title | Speech perception at birth: The brain encodes fast and slow temporal information |
title_full | Speech perception at birth: The brain encodes fast and slow temporal information |
title_fullStr | Speech perception at birth: The brain encodes fast and slow temporal information |
title_full_unstemmed | Speech perception at birth: The brain encodes fast and slow temporal information |
title_short | Speech perception at birth: The brain encodes fast and slow temporal information |
title_sort | speech perception at birth: the brain encodes fast and slow temporal information |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7439442/ https://www.ncbi.nlm.nih.gov/pubmed/32832669 http://dx.doi.org/10.1126/sciadv.aba7830 |
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