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Neural responses to natural and enhanced speech edges in children with and without dyslexia

Sensory-neural studies indicate that children with developmental dyslexia show impairments in processing acoustic speech envelope information. Prior studies suggest that this arises in part from reduced sensory sensitivity to amplitude rise times (ARTs or speech “edges”) in the envelope, accompanied...

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Autores principales: Mandke, Kanad, Flanagan, Sheila, Macfarlane, Annabel, Feltham, Georgia, Gabrielczyk, Fiona, Wilson, Angela M., Gross, Joachim, Goswami, Usha
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10571917/
https://www.ncbi.nlm.nih.gov/pubmed/37841072
http://dx.doi.org/10.3389/fnhum.2023.1200950
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author Mandke, Kanad
Flanagan, Sheila
Macfarlane, Annabel
Feltham, Georgia
Gabrielczyk, Fiona
Wilson, Angela M.
Gross, Joachim
Goswami, Usha
author_facet Mandke, Kanad
Flanagan, Sheila
Macfarlane, Annabel
Feltham, Georgia
Gabrielczyk, Fiona
Wilson, Angela M.
Gross, Joachim
Goswami, Usha
author_sort Mandke, Kanad
collection PubMed
description Sensory-neural studies indicate that children with developmental dyslexia show impairments in processing acoustic speech envelope information. Prior studies suggest that this arises in part from reduced sensory sensitivity to amplitude rise times (ARTs or speech “edges”) in the envelope, accompanied by less accurate neural encoding of low-frequency envelope information. Accordingly, enhancing these characteristics of the speech envelope may enhance neural speech processing in children with dyslexia. Here we applied an envelope modulation enhancement (EME) algorithm to a 10-min story read in child-directed speech (CDS), enhancing ARTs and also enhancing low-frequency envelope information. We compared neural speech processing (as measured using MEG) for the EME story with the same story read in natural CDS for 9-year-old children with and without dyslexia. The EME story affected neural processing in the power domain for children with dyslexia, particularly in the delta band (0.5–4 Hz) in the superior temporal gyrus. This may suggest that prolonged experience with EME speech could ameliorate some of the impairments shown in natural speech processing by children with dyslexia.
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spelling pubmed-105719172023-10-14 Neural responses to natural and enhanced speech edges in children with and without dyslexia Mandke, Kanad Flanagan, Sheila Macfarlane, Annabel Feltham, Georgia Gabrielczyk, Fiona Wilson, Angela M. Gross, Joachim Goswami, Usha Front Hum Neurosci Neuroscience Sensory-neural studies indicate that children with developmental dyslexia show impairments in processing acoustic speech envelope information. Prior studies suggest that this arises in part from reduced sensory sensitivity to amplitude rise times (ARTs or speech “edges”) in the envelope, accompanied by less accurate neural encoding of low-frequency envelope information. Accordingly, enhancing these characteristics of the speech envelope may enhance neural speech processing in children with dyslexia. Here we applied an envelope modulation enhancement (EME) algorithm to a 10-min story read in child-directed speech (CDS), enhancing ARTs and also enhancing low-frequency envelope information. We compared neural speech processing (as measured using MEG) for the EME story with the same story read in natural CDS for 9-year-old children with and without dyslexia. The EME story affected neural processing in the power domain for children with dyslexia, particularly in the delta band (0.5–4 Hz) in the superior temporal gyrus. This may suggest that prolonged experience with EME speech could ameliorate some of the impairments shown in natural speech processing by children with dyslexia. Frontiers Media S.A. 2023-09-28 /pmc/articles/PMC10571917/ /pubmed/37841072 http://dx.doi.org/10.3389/fnhum.2023.1200950 Text en Copyright © 2023 Mandke, Flanagan, Macfarlane, Feltham, Gabrielczyk, Wilson, Gross and Goswami. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Mandke, Kanad
Flanagan, Sheila
Macfarlane, Annabel
Feltham, Georgia
Gabrielczyk, Fiona
Wilson, Angela M.
Gross, Joachim
Goswami, Usha
Neural responses to natural and enhanced speech edges in children with and without dyslexia
title Neural responses to natural and enhanced speech edges in children with and without dyslexia
title_full Neural responses to natural and enhanced speech edges in children with and without dyslexia
title_fullStr Neural responses to natural and enhanced speech edges in children with and without dyslexia
title_full_unstemmed Neural responses to natural and enhanced speech edges in children with and without dyslexia
title_short Neural responses to natural and enhanced speech edges in children with and without dyslexia
title_sort neural responses to natural and enhanced speech edges in children with and without dyslexia
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10571917/
https://www.ncbi.nlm.nih.gov/pubmed/37841072
http://dx.doi.org/10.3389/fnhum.2023.1200950
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