DIVA Meets EEG: Model Validation Using Formant-Shift Reflex

Jhosmary Cuadros, Lucía Z-Rivera, Christian Castro, Grace Whitaker, Mónica Otero, Alejandro Weinstein, Eduardo Martínez-Montes, Pavel Prado, Matías Zañartu

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)

Resumen

Featured Application: An extension of the DIVA model to include EEG is presented and initially validated using group-level statistics. The DIVA_EEG expands the number of scenarios in which vocal and speech behaviors can be assessed and has potential applications for personalized model-driven interventions. The neurocomputational model ‘Directions into Velocities of Articulators’ (DIVA) was developed to account for various aspects of normal and disordered speech production and acquisition. The neural substrates of DIVA were established through functional magnetic resonance imaging (fMRI), providing physiological validation of the model. This study introduces DIVA_EEG an extension of DIVA that utilizes electroencephalography (EEG) to leverage the high temporal resolution and broad availability of EEG over fMRI. For the development of DIVA_EEG, EEG-like signals were derived from original equations describing the activity of the different DIVA maps. Synthetic EEG associated with the utterance of syllables was generated when both unperturbed and perturbed auditory feedback (first formant perturbations) were simulated. The cortical activation maps derived from synthetic EEG closely resembled those of the original DIVA model. To validate DIVA_EEG, the EEG of individuals with typical voices (N = 30) was acquired during an altered auditory feedback paradigm. The resulting empirical brain activity maps significantly overlapped with those predicted by DIVA_EEG. In conjunction with other recent model extensions, DIVA_EEG lays the foundations for constructing a complete neurocomputational framework to tackle vocal and speech disorders, which can guide model-driven personalized interventions.

Idioma originalIndefinido/desconocido
Número de artículo7512
PublicaciónApplied Sciences
Volumen13
N.º13
DOI
EstadoPublicada - 2023

Nota bibliográfica

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© 2023 by the authors.

Áreas temáticas de ASJC Scopus

  • Ingeniería General
  • Instrumental
  • Ciencia de los Materiales General
  • Procesos de transferencia y flujo de líquidos
  • Química de procesos y tecnología
  • Informática aplicada

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