Sluggish vagal brake reactivity to physical exercise challenge in children with selective mutism.
Dev Psychopathol
; 24(1): 241-50, 2012 Feb.
Article
en En
| MEDLINE
| ID: mdl-22293007
ABSTRACT
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.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Sistema Nervioso Autónomo
/
Nervio Vago
/
Ejercicio Físico
/
Frecuencia Cardíaca
/
Mutismo
Tipo de estudio:
Prognostic_studies
Límite:
Adolescent
/
Child
/
Child, preschool
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Dev Psychopathol
Asunto de la revista:
PSICOLOGIA
/
PSIQUIATRIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos