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Pathophysiology of Involuntary Emotional Expression Disorder

Published online by Cambridge University Press:  07 November 2014

Peter V. Rabins*
Affiliation:
Dr. Rabins is professor and vice chair for academic affairs and director of the Division of Geriatric and Neuropsychiatry in the Department of Psychiatry at, Johns Hopkins University School of Medicine, in Baltimore, Maryland
David B. Arciniegas
Affiliation:
Dr. Arciniegas is associate professor of psychiatry and neurology and director of the Neurobehavioral Disorders Program at the, University of Colorado School of Medicine, in Denver, Colorado, and co-medical director of the Brain Injury Rehabilitation Unit at HealthONE Spalding Rehabilitation Hospital, in Aurora, Colorado
*
Johns Hopkins University School of Medicine, 600 North Wolfe St, Baltimore, MD 21287. Tel: 410-955-6736; Fax:, 410-614-1094; Email:, pvrabins@jhmi.edu

Abstract

Extensive clinical experience and research suggest that a cortico-limbic-subcortico-thalamic-ponto-cerebellar network plays a significant role in the expression of human emotions. This network includes specific cerebral, cerebellar, and brainstem areas and their multiple projections/pathways, with activity modulated through serotonergic, dopaminergic, glutamatergic, and possibly sigma receptor neurotransmitter systems. Disruptions of regulatory and inhibitory mechanisms in the structure and function of this network likely constitute a pathophysiological basis for the crying and laughing episodes characteristic of involuntary emotional expression disorder. Pharmacologic interventions targeting the neurochemical modulators of the emotional expression systems may afford opportunities for symptom control among persons affected by this disorder.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2007

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