EEG and MEG markers of vocal inhibition in fluent and non-fluent speakers

Research output: Contribution to journalMeeting abstractResearch

Abstract

Overactivation of the right inferior frontal gyrus, an area of the brain that underpins voluntary arrest of action, has been associated with stuttering. While there has been much research conducted on manual response inhibition, very few studies have examined vocal response inhibition and to date, no study has examined the temporal neurodynamics of vocal inhibition. Therefore, the first part of the present study identified, in a group of control participants, the temporal neural correlates of vocal response inhibition by recording electroencephalographic activity during a modified version of the stop signal task. Behavioural results showed that participants were able to inhibit a vocal response within approximately 324 ms. Analysis of ERPs revealed that a positive component around 324 ms was significantly larger in amplitude during successfully stopped trials compared to in an ignore condition. The second part of this study applied the methodology of the first part to a group of stuttering participants in a magnetoencephalographic (MEG) study. The results of this allow us to examine the temporal neurodynamics of vocal response inhibition in stutterers and to examine these in relation to the brain structures known to exhibit functional activation anomalies in stuttering.
LanguageEnglish
Pages247
Number of pages1
JournalClinical EEG and neuroscience
Volume43
Issue number3
Publication statusPublished - 2012
EventAustralasian Cognitive Neurosciences Conference (21st : 2011) - Sydney
Duration: 9 Dec 201112 Dec 2011

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Stuttering
Electroencephalography
Brain
Prefrontal Cortex
Control Groups
Research

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title = "EEG and MEG markers of vocal inhibition in fluent and non-fluent speakers",
abstract = "Overactivation of the right inferior frontal gyrus, an area of the brain that underpins voluntary arrest of action, has been associated with stuttering. While there has been much research conducted on manual response inhibition, very few studies have examined vocal response inhibition and to date, no study has examined the temporal neurodynamics of vocal inhibition. Therefore, the first part of the present study identified, in a group of control participants, the temporal neural correlates of vocal response inhibition by recording electroencephalographic activity during a modified version of the stop signal task. Behavioural results showed that participants were able to inhibit a vocal response within approximately 324 ms. Analysis of ERPs revealed that a positive component around 324 ms was significantly larger in amplitude during successfully stopped trials compared to in an ignore condition. The second part of this study applied the methodology of the first part to a group of stuttering participants in a magnetoencephalographic (MEG) study. The results of this allow us to examine the temporal neurodynamics of vocal response inhibition in stutterers and to examine these in relation to the brain structures known to exhibit functional activation anomalies in stuttering.",
author = "Sowman, {Paul F.} and Andrew Etchell and Stephen Crain and Elisabeth Harrison and Johnson, {Blake W.}",
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issn = "1550-0594",
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EEG and MEG markers of vocal inhibition in fluent and non-fluent speakers. / Sowman, Paul F.; Etchell, Andrew; Crain, Stephen; Harrison, Elisabeth; Johnson, Blake W.

In: Clinical EEG and neuroscience, Vol. 43, No. 3, 2012, p. 247.

Research output: Contribution to journalMeeting abstractResearch

TY - JOUR

T1 - EEG and MEG markers of vocal inhibition in fluent and non-fluent speakers

AU - Sowman, Paul F.

AU - Etchell, Andrew

AU - Crain, Stephen

AU - Harrison, Elisabeth

AU - Johnson, Blake W.

PY - 2012

Y1 - 2012

N2 - Overactivation of the right inferior frontal gyrus, an area of the brain that underpins voluntary arrest of action, has been associated with stuttering. While there has been much research conducted on manual response inhibition, very few studies have examined vocal response inhibition and to date, no study has examined the temporal neurodynamics of vocal inhibition. Therefore, the first part of the present study identified, in a group of control participants, the temporal neural correlates of vocal response inhibition by recording electroencephalographic activity during a modified version of the stop signal task. Behavioural results showed that participants were able to inhibit a vocal response within approximately 324 ms. Analysis of ERPs revealed that a positive component around 324 ms was significantly larger in amplitude during successfully stopped trials compared to in an ignore condition. The second part of this study applied the methodology of the first part to a group of stuttering participants in a magnetoencephalographic (MEG) study. The results of this allow us to examine the temporal neurodynamics of vocal response inhibition in stutterers and to examine these in relation to the brain structures known to exhibit functional activation anomalies in stuttering.

AB - Overactivation of the right inferior frontal gyrus, an area of the brain that underpins voluntary arrest of action, has been associated with stuttering. While there has been much research conducted on manual response inhibition, very few studies have examined vocal response inhibition and to date, no study has examined the temporal neurodynamics of vocal inhibition. Therefore, the first part of the present study identified, in a group of control participants, the temporal neural correlates of vocal response inhibition by recording electroencephalographic activity during a modified version of the stop signal task. Behavioural results showed that participants were able to inhibit a vocal response within approximately 324 ms. Analysis of ERPs revealed that a positive component around 324 ms was significantly larger in amplitude during successfully stopped trials compared to in an ignore condition. The second part of this study applied the methodology of the first part to a group of stuttering participants in a magnetoencephalographic (MEG) study. The results of this allow us to examine the temporal neurodynamics of vocal response inhibition in stutterers and to examine these in relation to the brain structures known to exhibit functional activation anomalies in stuttering.

UR - https://doi.org/10.1177/1550059412444821

M3 - Meeting abstract

VL - 43

SP - 247

JO - Journal of Clinical EEG and Neuroscience : Abstracts of peer-reviewed presentations at the Australasian Cognitive Neurosciences Conference (20th meeting of the Australasian Society for Psychophysiology), November 26-29, 2010, Swinburne University of Techn

T2 - Journal of Clinical EEG and Neuroscience : Abstracts of peer-reviewed presentations at the Australasian Cognitive Neurosciences Conference (20th meeting of the Australasian Society for Psychophysiology), November 26-29, 2010, Swinburne University of Techn

JF - Journal of Clinical EEG and Neuroscience : Abstracts of peer-reviewed presentations at the Australasian Cognitive Neurosciences Conference (20th meeting of the Australasian Society for Psychophysiology), November 26-29, 2010, Swinburne University of Techn

SN - 1550-0594

IS - 3

ER -