Brain activity in adults who stutter: similarities across speaking tasks and correlations with stuttering frequency and speaking rate.

Brain and Language
Roger J InghamJ C Ingham

Abstract

Many differences in brain activity have been reported between persons who stutter (PWS) and typically fluent controls during oral reading tasks. An earlier meta-analysis of imaging studies identified stutter-related regions, but recent studies report less agreement with those regions. A PET study on adult dextral PWS (n=18) and matched fluent controls (CONT, n=12) is reported that used both oral reading and monologue tasks. After correcting for speech rate differences between the groups the task-activation differences were surprisingly small. For both analyses only some regions previously considered stutter-related were more activated in the PWS group than in the CONT group, and these were also activated during eyes-closed rest (ECR). In the PWS group, stuttering frequency was correlated with cortico-striatal-thalamic circuit activity in both speaking tasks. The neuroimaging findings for the PWS group, relative to the CONT group, appear consistent with neuroanatomic abnormalities being increasingly reported among PWS.

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Citations

Jan 22, 2013·Brain and Language·Nicholas F WymbsScott T Grafton
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Jun 23, 2021·Journal of Speech, Language, and Hearing Research : JSLHR·Charlotte E E WiltshireKate E Watkins

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