Eric S. Jackson
A fNIRS Investigation of Speech Planning and Execution in Adults Who Stutter
Jackson, Eric S.; Wijeakumar, Sobana; Beal, Deryk S.; Brown, Bryan; Zebrowski, Patricia; Spencer, John P.
Authors
Dr. SOBANAWARTINY WIJEAKUMAR SOBANAWARTINY.WIJEAKUMAR@NOTTINGHAM.AC.UK
Assistant Professor
Deryk S. Beal
Bryan Brown
Patricia Zebrowski
John P. Spencer
Abstract
© 2019 IBRO Our study aimed to determine the neural correlates of speech planning and execution in adults who stutter (AWS). Fifteen AWS and 15 controls (CON) completed two tasks that either manipulated speech planning or execution processing loads. Functional near-infrared spectroscopy (fNIRS) was used to measure changes in blood flow concentrations during each task, thus providing an indirect measure of neural activity. An image-based reconstruction technique was used to analyze the results and facilitate their interpretation in the context of previous functional neuroimaging studies of AWS that used positron emission tomography (PET) or functional magnetic resonance imaging (fMRI). For planning, we compared neural activity associated with high versus low planning load in AWS and CON. For execution, we compared the neural activity associated with overt versus covert naming in AWS and CON. Broadly, group level effects corroborate previous PET/fMRI findings including under-activation in left-hemisphere perisylvian speech-language networks and over-activation in right-hemisphere homologs. Increased planning load revealed atypical left-hemisphere activation in AWS, whereas increased execution load yielded atypical right fronto-temporo-parietal and bilateral motor activation in AWS. Our results add to the limited literature differentiating speech planning versus execution processes in AWS.
Citation
Jackson, E. S., Wijeakumar, S., Beal, D. S., Brown, B., Zebrowski, P., & Spencer, J. P. (2019). A fNIRS Investigation of Speech Planning and Execution in Adults Who Stutter. Neuroscience, 406, 73-85. https://doi.org/10.1016/j.neuroscience.2019.02.032
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 26, 2019 |
Online Publication Date | Mar 6, 2019 |
Publication Date | May 15, 2019 |
Deposit Date | Mar 10, 2020 |
Publicly Available Date | Mar 10, 2020 |
Journal | Neuroscience |
Print ISSN | 0306-4522 |
Electronic ISSN | 1873-7544 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 406 |
Pages | 73-85 |
DOI | https://doi.org/10.1016/j.neuroscience.2019.02.032 |
Keywords | General Neuroscience |
Public URL | https://nottingham-repository.worktribe.com/output/3828078 |
Publisher URL | https://doi.org/10.1016/j.neuroscience.2019.02.032 |
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