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Delta- and theta-band cortical tracking and phase-amplitude coupling to sung speech by infants

View ORCID ProfileAdam Attaheri, View ORCID ProfileÁine Ní Choisdealbha, View ORCID ProfileGiovanni M. Di Liberto, View ORCID ProfileSinead Rocha, View ORCID ProfilePerrine Brusini, Natasha Mead, Helen Olawole-Scott, Panagiotis Boutris, View ORCID ProfileSamuel Gibbon, Isabel Williams, Christina Grey, View ORCID ProfileSheila Flanagan, View ORCID ProfileUsha Goswami
doi: https://doi.org/10.1101/2020.10.12.329326
Adam Attaheri
1University of Cambridge
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  • For correspondence: aa974@cam.ac.uk
Áine Ní Choisdealbha
1University of Cambridge
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Giovanni M. Di Liberto
2Ecole Normale Superieure
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Sinead Rocha
1University of Cambridge
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Perrine Brusini
1University of Cambridge
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Natasha Mead
1University of Cambridge
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Helen Olawole-Scott
1University of Cambridge
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Panagiotis Boutris
1University of Cambridge
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Samuel Gibbon
1University of Cambridge
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Isabel Williams
1University of Cambridge
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Christina Grey
1University of Cambridge
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Sheila Flanagan
1University of Cambridge
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Usha Goswami
1University of Cambridge
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Abstract

Brain activity is known to track the amplitude envelope of adult-directed speech (ADS). Infant-directed speech (IDS) has significantly greater modulation energy than ADS in an amplitude-modulation (AM) band centered on ~2 Hz. Accordingly, cortical tracking of speech by delta-band neural signals may be critical for language acquisition. We examined the presence and maturation of low frequency (<12Hz) cortical speech tracking, recording EEG longitudinally from 60 infants aged 4-, 7-, and 11-months listening to sung nursery rhymes. After establishing stimulus-induced neural signals in delta and theta, cortical tracking at each age was assessed in the delta, theta and alpha [control] bands using a multivariate temporal response function (mTRF) method. Delta-beta, delta-gamma, theta-beta and theta-gamma phase-amplitude coupling (PAC) was also assessed. Significant delta and theta but not alpha tracking was found, the earliest such demonstration for speech. Significant PAC was present at all ages, with stronger delta-driven coupling observed, as hypothesised.

Competing Interest Statement

The authors have declared no competing interest.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted October 12, 2020.
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Delta- and theta-band cortical tracking and phase-amplitude coupling to sung speech by infants
Adam Attaheri, Áine Ní Choisdealbha, Giovanni M. Di Liberto, Sinead Rocha, Perrine Brusini, Natasha Mead, Helen Olawole-Scott, Panagiotis Boutris, Samuel Gibbon, Isabel Williams, Christina Grey, Sheila Flanagan, Usha Goswami
bioRxiv 2020.10.12.329326; doi: https://doi.org/10.1101/2020.10.12.329326
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Delta- and theta-band cortical tracking and phase-amplitude coupling to sung speech by infants
Adam Attaheri, Áine Ní Choisdealbha, Giovanni M. Di Liberto, Sinead Rocha, Perrine Brusini, Natasha Mead, Helen Olawole-Scott, Panagiotis Boutris, Samuel Gibbon, Isabel Williams, Christina Grey, Sheila Flanagan, Usha Goswami
bioRxiv 2020.10.12.329326; doi: https://doi.org/10.1101/2020.10.12.329326

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