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Adaptation to pitch-altered feedback is independent of one's own voice pitch sensitivity.

Author(s): Alemi R, Lehmann A, Deroche MLD

Monitoring voice pitch is a fine-tuned process in daily conversations as conveying accurately the linguistic and affective cues in a given utterance depends on the precise control of phonation and intonation. This monitoring is thought to depend on whether ...

Article GUID: 33033324
Neural Correlates of Vocal Pitch Compensation in Individuals Who Stutter.

Author(s): Sares AG, Deroche MLD, Ohashi H, Shiller DM, Gracco VL

Front Hum Neurosci. 2020;14:18 Authors: Sares AG, Deroche MLD, Ohashi H, Shiller DM, Gracco VL

Article GUID: 32161525
Perception of Child-Directed Versus Adult-Directed Emotional Speech in Pediatric Cochlear Implant Users.

Author(s): Barrett KC, Chatterjee M, Caldwell MT, Deroche MLD, Jiradejvong P, Kulkarni AM, Limb CJ

Ear Hear. 2020 Mar 06;: Authors: Barrett KC, Chatterjee M, Caldwell MT, Deroche MLD, Jiradejvong P, Kulkarni AM, Limb CJ

Article GUID: 32149924
Processing of Acoustic Information in Lexical Tone Production and Perception by Pediatric Cochlear Implant Recipients.

Author(s): Deroche MLD, Lu HP, Lin YS, Chatterjee M, Peng SC

Front Neurosci. 2019;13:639 Authors: Deroche MLD, Lu HP, Lin YS, Chatterjee M, Peng SC

Article GUID: 31281237
Title:Neural Correlates of Vocal Pitch Compensation in Individuals Who Stutter.
Authors:Sares AG,  Deroche MLD,  Ohashi H,  Shiller DM,  Gracco VL
Link:https://www.ncbi.nlm.nih.gov/pubmed/32161525?dopt=Abstract
DOI:10.3389/fnhum.2020.00018
Category:Front Hum Neurosci
PMID:32161525
Dept Affiliation: PSYCHOLOGY
1 Speech Motor Control Lab, Integrated Program in Neuroscience and School of Communication Sciences and Disorders, McGill University, Montreal, QC, Canada.
2 Centre for Research on Brain, Language, and Music, Montreal, QC, Canada.
3 Laboratory for Hearing and Cognition, Department of Psychology, Concordia University, Montreal, QC, Canada.
4 Haskins Laboratories, New Haven, CT, United States.
5 École d'orthophonie et d'audiologie, Université de Montréal, Montreal, QC, Canada.

Description:

Neural Correlates of Vocal Pitch Compensation in Individuals Who Stutter.

Front Hum Neurosci. 2020;14:18

Authors: Sares AG, Deroche MLD, Ohashi H, Shiller DM, Gracco VL

Abstract

Stuttering is a disorder that impacts the smooth flow of speech production and is associated with a deficit in sensorimotor integration. In a previous experiment, individuals who stutter were able to vocally compensate for pitch shifts in their auditory feedback, but they exhibited more variability in the timing of their corrective responses. In the current study, we focused on the neural correlates of the task using functional MRI. Participants produced a vowel sound in the scanner while hearing their own voice in real time through headphones. On some trials, the audio was shifted up or down in pitch, eliciting a corrective vocal response. Contrasting pitch-shifted vs. unshifted trials revealed bilateral superior temporal activation over all the participants. However, the groups differed in the activation of middle temporal gyrus and superior frontal gyrus [Brodmann area 10 (BA 10)], with individuals who stutter displaying deactivation while controls displayed activation. In addition to the standard univariate general linear modeling approach, we employed a data-driven technique (independent component analysis, or ICA) to separate task activity into functional networks. Among the networks most correlated with the experimental time course, there was a combined auditory-motor network in controls, but the two networks remained separable for individuals who stuttered. The decoupling of these networks may account for temporal variability in pitch compensation reported in our previous work, and supports the idea that neural network coherence is disturbed in the stuttering brain.

PMID: 32161525 [PubMed]