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Κυριακή 6 Δεκεμβρίου 2020

Reliability of single-subject neural activation patterns in speech production tasks.

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Reliability of single-subject neural activation patterns in speech production tasks.

Brain Lang. 2020 Dec 02;212:104881

Authors: Frankford SA, Nieto-Castañón A, Tourville JA, Guenther FH

Abstract
Speech neuroimaging research targeting individual speakers could help elucidate differences that may be crucial to understanding speech disorders. However, this research necessitates reliable brain activation across multiple speech production sessions. In the present study, we evaluated the reliability of speech-related brain activity measured by functional magnetic resonance imaging data from twenty neuro-typical subjects who participated in two experiments involving reading aloud simple speech stimuli. Using traditional methods like the Dice and intraclass correlation coefficients, we found that most individuals displayed moderate to high reliability. We also found that a novel machine-learning subject classifier could identify these individuals by their speech activation patterns with 97% accuracy from among a dataset of seventy-five subjects. These results suggest that single-subject speech research would yield valid results and that investigations into the reliability of speech activation in people with speech disorders are warranted.

PMID: 33278802 [PubMed - as supplied by publisher]

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