TY - JOUR
T1 - Autonomic nervous system activity of preschool-age children who stutter
AU - Jones, Robin M.
AU - Buhr, Anthony P.
AU - Conture, Edward G.
AU - Tumanova, Victoria
AU - Walden, Tedra A.
AU - Porges, Stephen W.
N1 - Funding Information:
This research was supported in part by National Institutes of Health (NIH) grants from the National Institute on Deafness and Other Communication Disorders (NIDCD) to Vanderbilt University ( 5R01DC000523-17 ), the National Center for Research Resources , a CTSA grant ( 1 UL1 RR024975-01 ) to Vanderbilt University that is now at the National Center for Advancing Translational Sciences ( UL1 TR000445-06 ). The research reported herein does not reflect the views of the NIH, NIDCD, CTSA, or Vanderbilt University. CONTINUING EDUCATION Autonomic nervous system activity of preschool-age children who stutter QUESTIONS
Funding Information:
Anthony Buhr received funding from a Federal NICHD training grant (T32-CH18921) in support of the research reported in this article. Victoria Tumanova received funding from NIH/NIDCD Grant (5R01DC000523-17), the National Center for Research Resources, CTSA Grant (1 UL1 RR024975-01) and National Center for Advancing Translational Sciences grant (UL1 TR000445-06) in support of the research reported in this article. Edward Conture received funding from NIH/NIDCD Grant (5501DC00523-17) and National Center for Research Resources, CTSA Grant (1 UL1 RR024975-01) in support of the research reported in this article. Tedra Walden received funding from NIH/NIDCD Grant (5R01DC000523-17) and National Center for Research Resources, CTSA Grant (1 UL1 RR024975-01) and National Center for Advancing Translational Sciences Grant (UL1 TR000445-06) in support of the research reported in this article. None of the other authors disclosed any relevant financial relationships used in support of the research reported in this article.
Publisher Copyright:
© 2014 Elsevier Inc.
PY - 2014
Y1 - 2014
N2 - Purpose: The purpose of this study was to investigate potential differences in autonomic nervous system (ANS) activity to emotional stimuli between preschool-age children who do (CWS) and do not stutter (CWNS). Methods: Participants were 20 preschool-age CWS (15 male) and 21 preschool-age CWNS (11 male). Participants were exposed to two emotion-inducing video clips (negative and positive) with neutral clips used to establish pre-and post-arousal baselines, and followed by age-appropriate speaking tasks. Respiratory sinus arrhythmia (RSA)-often used as an index of parasympathetic activity-and skin conductance level (SCL)-often used as an index of sympathetic activity-were measured while participants listened to/watched the audio-video clip presentation and performed a speaking task. Results: CWS, compared to CWNS, displayed lower amplitude RSA at baseline and higher SCL during a speaking task following the positive, compared to the negative, condition. During speaking, only CWS had a significant positive relation between RSA and SCL. Conclusion: Present findings suggest that preschool-age CWS, when compared to their normally fluent peers, have a physiological state that is characterized by a greater vulnerability to emotional reactivity (i.e., lower RSA indexing less parasympathetic tone) and a greater mobilization of resources in support of emotional reactivity (i.e., higher SCL indexing more sympathetic activity) during positive conditions. Thus, while reducing stuttering to a pure physiological process is unwarranted, the present findings suggest that the autonomic nervous system is involved.Educational Objectives: The reader will be able to: (a) summarize current empirical evidence on the role of emotion in childhood stuttering; (b) describe physiological indexes of sympathetic and parasympathetic activity; (c) summarize how preschool-age children who stutter differ from preschool-age children who do not stutter in autonomic activity; (d) discuss possible implications of current findings in relation to the development of childhood stuttering.
AB - Purpose: The purpose of this study was to investigate potential differences in autonomic nervous system (ANS) activity to emotional stimuli between preschool-age children who do (CWS) and do not stutter (CWNS). Methods: Participants were 20 preschool-age CWS (15 male) and 21 preschool-age CWNS (11 male). Participants were exposed to two emotion-inducing video clips (negative and positive) with neutral clips used to establish pre-and post-arousal baselines, and followed by age-appropriate speaking tasks. Respiratory sinus arrhythmia (RSA)-often used as an index of parasympathetic activity-and skin conductance level (SCL)-often used as an index of sympathetic activity-were measured while participants listened to/watched the audio-video clip presentation and performed a speaking task. Results: CWS, compared to CWNS, displayed lower amplitude RSA at baseline and higher SCL during a speaking task following the positive, compared to the negative, condition. During speaking, only CWS had a significant positive relation between RSA and SCL. Conclusion: Present findings suggest that preschool-age CWS, when compared to their normally fluent peers, have a physiological state that is characterized by a greater vulnerability to emotional reactivity (i.e., lower RSA indexing less parasympathetic tone) and a greater mobilization of resources in support of emotional reactivity (i.e., higher SCL indexing more sympathetic activity) during positive conditions. Thus, while reducing stuttering to a pure physiological process is unwarranted, the present findings suggest that the autonomic nervous system is involved.Educational Objectives: The reader will be able to: (a) summarize current empirical evidence on the role of emotion in childhood stuttering; (b) describe physiological indexes of sympathetic and parasympathetic activity; (c) summarize how preschool-age children who stutter differ from preschool-age children who do not stutter in autonomic activity; (d) discuss possible implications of current findings in relation to the development of childhood stuttering.
KW - Preschool-age
KW - Respiratory sinus arrhythmia
KW - Skin conductance
KW - Stuttering
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U2 - 10.1016/j.jfludis.2014.06.002
DO - 10.1016/j.jfludis.2014.06.002
M3 - Article
C2 - 25087166
AN - SCOPUS:84907923357
SN - 0094-730X
VL - 41
SP - 12
EP - 31
JO - Journal of Fluency Disorders
JF - Journal of Fluency Disorders
IS - C
ER -