| Sluggish vagal brake reactivity to physical exercise challenge in children with selective mutism. | |
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MedLine Citation:
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PMID: 22293007 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Cardiovascular response patterns to laboratory-based social and physical exercise challenges were evaluated in 69 children and adolescents, 20 with selective mutism (SM), to identify possible neurophysiological mechanisms that may mediate the behavioral features of SM. Results suggest that SM is associated with a dampened response of the vagal brake to physical exercise that is manifested as reduced reactivity in heart rate and respiration. Polyvagal theory proposes that the regulation of the vagal brake is a neurophysiological component of an integrated social engagement system that includes the neural regulation of the laryngeal and pharyngeal muscles. Within this theoretical framework, sluggish vagal brake reactivity may parallel an inability to recruit efficiently the structures involved in speech. Thus, the findings suggest that dampened autonomic reactivity during mobilization behaviors may be a biomarker of SM that can be assessed independent of the social stimuli that elicit mutism. |
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Authors:
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Keri J Heilman; Sucheta D Connolly; Wendy O Padilla; Marika I Wrzosek; Patricia A Graczyk; Stephen W Porges |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Development and psychopathology Volume: 24 ISSN: 1469-2198 ISO Abbreviation: Dev. Psychopathol. Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-02-01 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8910645 Medline TA: Dev Psychopathol Country: United States |
Other Details:
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Languages: eng Pagination: 241-50 Citation Subset: IM |
Affiliation:
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University of Illinois at Chicago. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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