Coherence Between Brain Activation and Speech Envelope at Word and Sentence Levels Showed Age-Related Differences in Low Frequency Bands
AbstractSpeech perception is dynamic and shows changes across development. In parallel, functional differences in brain development over time have been well documented and these differences may interact with changes in speech perception during infancy and childhood. Further, there is...
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| Format: | Article |
| Language: | English |
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The MIT Press
2021-01-01
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| Series: | Neurobiology of Language |
| Online Access: | https://direct.mit.edu/nol/article/2/2/226/97419/Coherence-Between-Brain-Activation-and-Speech |
| _version_ | 1819283358488723456 |
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| author | Orsolya B. Kolozsvári Weiyong Xu Georgia Gerike Tiina Parviainen Lea Nieminen Aude Noiray Jarmo A. Hämäläinen |
| author_facet | Orsolya B. Kolozsvári Weiyong Xu Georgia Gerike Tiina Parviainen Lea Nieminen Aude Noiray Jarmo A. Hämäläinen |
| author_sort | Orsolya B. Kolozsvári |
| collection | DOAJ |
| description |
AbstractSpeech perception is dynamic and shows changes across development. In parallel, functional differences in brain development over time have been well documented and these differences may interact with changes in speech perception during infancy and childhood. Further, there is evidence that the two hemispheres contribute unequally to speech segmentation at the sentence and phonemic levels. To disentangle those contributions, we studied the cortical tracking of various sized units of speech that are crucial for spoken language processing in children (4.7–9.3 years old, N = 34) and adults (N = 19). We measured participants’ magnetoencephalogram (MEG) responses to syllables, words, and sentences, calculated the coherence between the speech signal and MEG responses at the level of words and sentences, and further examined auditory evoked responses to syllables. Age-related differences were found for coherence values at the delta and theta frequency bands. Both frequency bands showed an effect of stimulus type, although this was attributed to the length of the stimulus and not the linguistic unit size. There was no difference between hemispheres at the source level either in coherence values for word or sentence processing or in evoked response to syllables. Results highlight the importance of the lower frequencies for speech tracking in the brain across different lexical units. Further, stimulus length affects the speech–brain associations suggesting methodological approaches should be selected carefully when studying speech envelope processing at the neural level. Speech tracking in the brain seems decoupled from more general maturation of the auditory cortex. |
| first_indexed | 2024-12-24T01:30:13Z |
| format | Article |
| id | doaj.art-87419f53129a4e1780d10728fab80029 |
| institution | Directory Open Access Journal |
| issn | 2641-4368 |
| language | English |
| last_indexed | 2024-12-24T01:30:13Z |
| publishDate | 2021-01-01 |
| publisher | The MIT Press |
| record_format | Article |
| series | Neurobiology of Language |
| spelling | doaj.art-87419f53129a4e1780d10728fab800292022-12-21T17:22:23ZengThe MIT PressNeurobiology of Language2641-43682021-01-012222625310.1162/nol_a_00033Coherence Between Brain Activation and Speech Envelope at Word and Sentence Levels Showed Age-Related Differences in Low Frequency BandsOrsolya B. Kolozsvári0http://orcid.org/0000-0002-1619-6314Weiyong Xu1http://orcid.org/0000-0003-4453-9836Georgia Gerike2Tiina Parviainen3http://orcid.org/0000-0001-6992-5157Lea Nieminen4http://orcid.org/0000-0003-2286-7409Aude Noiray5http://orcid.org/0000-0002-7013-1271Jarmo A. Hämäläinen6Department of Psychology, University of Jyväskylä, FinlandDepartment of Psychology, University of Jyväskylä, FinlandDepartment of Psychology, University of Jyväskylä, FinlandDepartment of Psychology, University of Jyväskylä, FinlandCentre for Applied Language Studies, University of Jyväskylä, FinlandLaboratory for Oral Language Acquisition (LOLA), University of Potsdam, GermanyDepartment of Psychology, University of Jyväskylä, Finland AbstractSpeech perception is dynamic and shows changes across development. In parallel, functional differences in brain development over time have been well documented and these differences may interact with changes in speech perception during infancy and childhood. Further, there is evidence that the two hemispheres contribute unequally to speech segmentation at the sentence and phonemic levels. To disentangle those contributions, we studied the cortical tracking of various sized units of speech that are crucial for spoken language processing in children (4.7–9.3 years old, N = 34) and adults (N = 19). We measured participants’ magnetoencephalogram (MEG) responses to syllables, words, and sentences, calculated the coherence between the speech signal and MEG responses at the level of words and sentences, and further examined auditory evoked responses to syllables. Age-related differences were found for coherence values at the delta and theta frequency bands. Both frequency bands showed an effect of stimulus type, although this was attributed to the length of the stimulus and not the linguistic unit size. There was no difference between hemispheres at the source level either in coherence values for word or sentence processing or in evoked response to syllables. Results highlight the importance of the lower frequencies for speech tracking in the brain across different lexical units. Further, stimulus length affects the speech–brain associations suggesting methodological approaches should be selected carefully when studying speech envelope processing at the neural level. Speech tracking in the brain seems decoupled from more general maturation of the auditory cortex.https://direct.mit.edu/nol/article/2/2/226/97419/Coherence-Between-Brain-Activation-and-Speech |
| spellingShingle | Orsolya B. Kolozsvári Weiyong Xu Georgia Gerike Tiina Parviainen Lea Nieminen Aude Noiray Jarmo A. Hämäläinen Coherence Between Brain Activation and Speech Envelope at Word and Sentence Levels Showed Age-Related Differences in Low Frequency Bands Neurobiology of Language |
| title | Coherence Between Brain Activation and Speech Envelope at Word and Sentence Levels Showed Age-Related Differences in Low Frequency Bands |
| title_full | Coherence Between Brain Activation and Speech Envelope at Word and Sentence Levels Showed Age-Related Differences in Low Frequency Bands |
| title_fullStr | Coherence Between Brain Activation and Speech Envelope at Word and Sentence Levels Showed Age-Related Differences in Low Frequency Bands |
| title_full_unstemmed | Coherence Between Brain Activation and Speech Envelope at Word and Sentence Levels Showed Age-Related Differences in Low Frequency Bands |
| title_short | Coherence Between Brain Activation and Speech Envelope at Word and Sentence Levels Showed Age-Related Differences in Low Frequency Bands |
| title_sort | coherence between brain activation and speech envelope at word and sentence levels showed age related differences in low frequency bands |
| url | https://direct.mit.edu/nol/article/2/2/226/97419/Coherence-Between-Brain-Activation-and-Speech |
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