The Effects of Fluency Enhancing Conditions on Sensorimotor Control of Speech in Typically Fluent Speakers: An EEG Mu Rhythm Study
Objective: To determine whether changes in sensorimotor control resulting from speaking conditions that induce fluency in people who stutter (PWS) can be measured using electroencephalographic (EEG) mu rhythms in neurotypical speakers.Methods: Non-stuttering (NS) adults spoke in one control conditio...
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doaj-16378ac938994826a8d03797422171432020-11-25T03:32:28ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612018-04-011210.3389/fnhum.2018.00126328454The Effects of Fluency Enhancing Conditions on Sensorimotor Control of Speech in Typically Fluent Speakers: An EEG Mu Rhythm StudyTiffani Kittilstved0Kevin J. Reilly1Ashley W. Harkrider2Devin Casenhiser3David Thornton4David E. Jenson5Tricia Hedinger6Andrew L. Bowers7Tim Saltuklaroglu8Department of Audiology and Speech Pathology, The University of Tennessee Health Science Center, Knoxville, TN, United StatesDepartment of Audiology and Speech Pathology, The University of Tennessee Health Science Center, Knoxville, TN, United StatesDepartment of Audiology and Speech Pathology, The University of Tennessee Health Science Center, Knoxville, TN, United StatesDepartment of Audiology and Speech Pathology, The University of Tennessee Health Science Center, Knoxville, TN, United StatesDepartment of Audiology and Speech Pathology, The University of Tennessee Health Science Center, Knoxville, TN, United StatesDepartment of Audiology and Speech Pathology, The University of Tennessee Health Science Center, Knoxville, TN, United StatesDepartment of Audiology and Speech Pathology, The University of Tennessee Health Science Center, Knoxville, TN, United StatesDepartment of Communication Disorders, The University of Arkansas, Fayetteville, AR, United StatesDepartment of Audiology and Speech Pathology, The University of Tennessee Health Science Center, Knoxville, TN, United StatesObjective: To determine whether changes in sensorimotor control resulting from speaking conditions that induce fluency in people who stutter (PWS) can be measured using electroencephalographic (EEG) mu rhythms in neurotypical speakers.Methods: Non-stuttering (NS) adults spoke in one control condition (solo speaking) and four experimental conditions (choral speech, delayed auditory feedback (DAF), prolonged speech and pseudostuttering). Independent component analysis (ICA) was used to identify sensorimotor μ components from EEG recordings. Time-frequency analyses measured μ-alpha (8–13 Hz) and μ-beta (15–25 Hz) event-related synchronization (ERS) and desynchronization (ERD) during each speech condition.Results: 19/24 participants contributed μ components. Relative to the control condition, the choral and DAF conditions elicited increases in μ-alpha ERD in the right hemisphere. In the pseudostuttering condition, increases in μ-beta ERD were observed in the left hemisphere. No differences were present between the prolonged speech and control conditions.Conclusions: Differences observed in the experimental conditions are thought to reflect sensorimotor control changes. Increases in right hemisphere μ-alpha ERD likely reflect increased reliance on auditory information, including auditory feedback, during the choral and DAF conditions. In the left hemisphere, increases in μ-beta ERD during pseudostuttering may have resulted from the different movement characteristics of this task compared with the solo speaking task. Relationships to findings in stuttering are discussed.Significance: Changes in sensorimotor control related feedforward and feedback control in fluency-enhancing speech manipulations can be measured using time-frequency decompositions of EEG μ rhythms in neurotypical speakers. This quiet, non-invasive, and temporally sensitive technique may be applied to learn more about normal sensorimotor control and fluency enhancement in PWS.http://journal.frontiersin.org/article/10.3389/fnhum.2018.00126/fullspeech productionfluency enhancing conditionsEEGmu rhythmindependent component analysis |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tiffani Kittilstved Kevin J. Reilly Ashley W. Harkrider Devin Casenhiser David Thornton David E. Jenson Tricia Hedinger Andrew L. Bowers Tim Saltuklaroglu |
spellingShingle |
Tiffani Kittilstved Kevin J. Reilly Ashley W. Harkrider Devin Casenhiser David Thornton David E. Jenson Tricia Hedinger Andrew L. Bowers Tim Saltuklaroglu The Effects of Fluency Enhancing Conditions on Sensorimotor Control of Speech in Typically Fluent Speakers: An EEG Mu Rhythm Study Frontiers in Human Neuroscience speech production fluency enhancing conditions EEG mu rhythm independent component analysis |
author_facet |
Tiffani Kittilstved Kevin J. Reilly Ashley W. Harkrider Devin Casenhiser David Thornton David E. Jenson Tricia Hedinger Andrew L. Bowers Tim Saltuklaroglu |
author_sort |
Tiffani Kittilstved |
title |
The Effects of Fluency Enhancing Conditions on Sensorimotor Control of Speech in Typically Fluent Speakers: An EEG Mu Rhythm Study |
title_short |
The Effects of Fluency Enhancing Conditions on Sensorimotor Control of Speech in Typically Fluent Speakers: An EEG Mu Rhythm Study |
title_full |
The Effects of Fluency Enhancing Conditions on Sensorimotor Control of Speech in Typically Fluent Speakers: An EEG Mu Rhythm Study |
title_fullStr |
The Effects of Fluency Enhancing Conditions on Sensorimotor Control of Speech in Typically Fluent Speakers: An EEG Mu Rhythm Study |
title_full_unstemmed |
The Effects of Fluency Enhancing Conditions on Sensorimotor Control of Speech in Typically Fluent Speakers: An EEG Mu Rhythm Study |
title_sort |
effects of fluency enhancing conditions on sensorimotor control of speech in typically fluent speakers: an eeg mu rhythm study |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Human Neuroscience |
issn |
1662-5161 |
publishDate |
2018-04-01 |
description |
Objective: To determine whether changes in sensorimotor control resulting from speaking conditions that induce fluency in people who stutter (PWS) can be measured using electroencephalographic (EEG) mu rhythms in neurotypical speakers.Methods: Non-stuttering (NS) adults spoke in one control condition (solo speaking) and four experimental conditions (choral speech, delayed auditory feedback (DAF), prolonged speech and pseudostuttering). Independent component analysis (ICA) was used to identify sensorimotor μ components from EEG recordings. Time-frequency analyses measured μ-alpha (8–13 Hz) and μ-beta (15–25 Hz) event-related synchronization (ERS) and desynchronization (ERD) during each speech condition.Results: 19/24 participants contributed μ components. Relative to the control condition, the choral and DAF conditions elicited increases in μ-alpha ERD in the right hemisphere. In the pseudostuttering condition, increases in μ-beta ERD were observed in the left hemisphere. No differences were present between the prolonged speech and control conditions.Conclusions: Differences observed in the experimental conditions are thought to reflect sensorimotor control changes. Increases in right hemisphere μ-alpha ERD likely reflect increased reliance on auditory information, including auditory feedback, during the choral and DAF conditions. In the left hemisphere, increases in μ-beta ERD during pseudostuttering may have resulted from the different movement characteristics of this task compared with the solo speaking task. Relationships to findings in stuttering are discussed.Significance: Changes in sensorimotor control related feedforward and feedback control in fluency-enhancing speech manipulations can be measured using time-frequency decompositions of EEG μ rhythms in neurotypical speakers. This quiet, non-invasive, and temporally sensitive technique may be applied to learn more about normal sensorimotor control and fluency enhancement in PWS. |
topic |
speech production fluency enhancing conditions EEG mu rhythm independent component analysis |
url |
http://journal.frontiersin.org/article/10.3389/fnhum.2018.00126/full |
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