Decoding speech information from EEG data with 4-, 7- and 11-month-old infants: Using convolutional neural network, mutual information-based and backward linear models

Keshavarzi, Mahmoud; Choisdealbha, Áine Ní; Attaheri, Adam; Rocha, Sinead; Brusini, Perrine; Gibbon, Samuel; Boutris, Panagiotis; Mead, Natasha; Olawole-Scott, Helen; Ahmed, Henna; Flanagan, Sheila; Mandke, Kanad; Goswami, Usha

doi:10.1016/j.jneumeth.2023.110036

Cited by 4 publications

(2 citation statements)

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“…Grammar measures were included in the UK BabyRhythm study, but did not show sufficient individual differences for neural prediction analyses (Rocha et al, 2024). Nevertheless, these prior TSF-driven infant data suggest that both delta-band phase angle and theta-gamma PAC in the current study may be associated with DLD status.…”

Section: Introductionmentioning

confidence: 79%

“…If neural temporal prediction of stressed syllable placement is important developmentally for language acquisition, then it might also be expected a priori that dynamic relations (cross-frequency coupling) between the electrophysiological delta and theta bands may be atypical in children with DLD. In the infant speech rhythm studies (Ni Choisdealbha, 2022, nursery rhymes were also sung to the participating infants while EEG was recorded (Attaheri et al, 2022;Keshavarzi et al, 2024b). While the accuracy of delta band cortical tracking predicted better language outcomes, greater theta power and a higher excitation/inhibition ratio between theta and delta predicted worse language outcomes (Attaheri et al, preprint).…”

Section: Introductionmentioning

confidence: 99%

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Neural processing of rhythmic speech by children with developmental language disorder (DLD): An EEG study

Keshavarzi,

Richards,

Feltham

et al. 2024

Preprint

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Sensitivity to rhythmic and prosodic cues in speech has been described as a precursor of language acquisition. Consequently, atypical rhythmic processing during infancy and early childhood has been considered a risk factor for developmental language disorders. This is the ‘atypical rhythm risk’ (ARR) hypothesis. The neural processing of rhythmic speech has not yet been explored in children with developmental language disorder (DLD). Here we utilise EEG and a rhythmic speech paradigm previously utilised for dyslexia to investigate the ARR hypothesis in 9-year-old children with and without DLD. We investigate angular velocity, power, ERPs, phase-amplitude coupling (PAC) and phase-phase coupling (PPC), at three frequency bands, delta, theta and low gamma. Both groups demonstrated significant and equivalent phase entrainment in the delta and theta bands, but only the control children showed significant phase entrainment in the low gamma band. Further, while angular velocity in the delta and theta bands was equivalent by group, there was a significant gamma-band difference. The children with DLD also exhibited significantly more theta and gamma power compared to the control children. Regarding PAC and PPC, both groups showed significant and equivalent coupling strength. However, group resultant phase differences showed that low-frequency phase (delta and theta) affected gamma oscillations differently by group. The EEG data show important differences between children with and without DLD in the neural mechanisms underpinning the processing of rhythmic speech. The findings are discussed in terms of auditory theories of DLD.

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Section: Introductionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Neural processing of rhythmic speech by children with developmental language disorder (DLD): An EEG study

Keshavarzi,

Richards,

Feltham

et al. 2024

Preprint

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Imitation of Multisyllabic Items by Children With Developmental Language Disorder: Evidence for Word-Level Atypical Speech Envelope and Pitch Contours

Parvez,

Keshavarzi,

Richards

et al. 2024

J Speech Lang Hear Res

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Purpose: Developmental language disorder (DLD) is a multifaceted disorder. Recently, interest has grown in prosodic aspects of DLD, but most investigations of possible prosodic causes focus on speech perception tasks. Here, we focus on speech production from a speech amplitude envelope (AE) perspective. Perceptual studies have indicated a role for difficulties in AE processing in DLD related to sensory/neural processing of prosody. We explore possible matching AE difficulties in production. Method: Fifty-seven children with and without DLD completed a computerized imitation task, copying aloud 30 familiar targets such as “alligator.” Children with DLD ( n = 20) were compared with typically developing children (age-matched controls [AMC], n = 21) and younger language controls (YLC, n = 16). Similarity of the child's productions to the target in terms of the continuous AE and pitch contour was computed using two similarity metrics, correlation, and mutual information. Both the speech AE and the pitch contour contain important information about stress patterning and intonational information over time. Results: Children with DLD showed significantly reduced imitation for both the AE and pitch contour metrics compared to AMC children. The opportunity to repeat the targets had no impact on performance for any group. Word length effects were similar across groups. Conclusions: The spoken production of multisyllabic words by children with DLD is atypical regarding both the AE and the pitch contour. This is consistent with a theoretical explanation of DLD based on impaired sensory/neural processing of low-frequency (slow) amplitude and frequency modulations, as predicted by the temporal sampling theory. Supplemental Material: https://doi.org/10.23641/asha.27165690

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Neural processing of rhythmic speech by children with developmental language disorder (DLD): An EEG study

Keshavarzi,

Richards,

Feltham

et al. 2024

Imaging Neuroscience

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Sensitivity to rhythmic and prosodic cues in speech has been described as a precursor of language acquisition. Consequently, atypical rhythmic processing during infancy and early childhood has been considered a risk factor for developmental language disorders. Despite many behavioural studies, the neural processing of rhythmic speech has not yet been explored in children with developmental language disorder (DLD). Here we utilise EEG to investigate the neural processing of rhythmic speech by 9-year-old children with and without DLD. In the current study, we investigate phase entrainment, angular velocity, power, event related potentials (ERPs), phase-amplitude coupling (PAC) and phase-phase coupling (PPC), at three frequency bands selected on the basis of the prior literature, delta, theta and low gamma. We predicted a different phase of entrainment in the delta band in children with DLD, and also greater theta power, atypical cross-frequency coupling and possibly atypical gamma-band responses. Contrary to prediction, children with DLD demonstrated significant and equivalent phase entrainment in the delta and theta bands to control children. However, only the control children showed significant phase entrainment in the low gamma band. The children with DLD also exhibited significantly more theta and low gamma power compared to the control children, and there was a significant gamma-band difference in angular velocity between the two groups. Finally, group resultant phase analyses showed that low-frequency phase (delta and theta) affected gamma oscillations differently by group. These EEG data show important differences between children with and without DLD in the neural mechanisms underpinning the processing of rhythmic speech. The findings are discussed in terms of auditory theories of DLD, particularly Temporal Sampling theory.

show abstract

Decoding speech information from EEG data with 4-, 7- and 11-month-old infants: Using convolutional neural network, mutual information-based and backward linear models

Cited by 4 publications

References 64 publications

Neural processing of rhythmic speech by children with developmental language disorder (DLD): An EEG study

Neural processing of rhythmic speech by children with developmental language disorder (DLD): An EEG study

Imitation of Multisyllabic Items by Children With Developmental Language Disorder: Evidence for Word-Level Atypical Speech Envelope and Pitch Contours

Neural processing of rhythmic speech by children with developmental language disorder (DLD): An EEG study

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