Document Detail

Dorsal/ventral parcellation of the amygdala: Relevance to impulsivity and aggression.
MedLine Citation:
PMID:  23352275     Owner:  NLM     Status:  In-Data-Review    
Investigations into the specific association of amygdala volume, a critical aspect of the fronto-limbic emotional circuitry, and aggression have produced results broadly consistent with the 'larger is more powerful' doctrine. However, recent reports suggest that the ventral and dorsal aspects of the amygdala play functionally specific roles, respectively, in the activation and control of behavior. Therefore, parceling amygdala volume into dorsal and ventral components might prove productive in testing hypotheses regarding volumetric association to aggression, and impulsivity, a related aspect of self-control. We sought to test this hypothesis in a group of 41 psychiatric patients who received standard magnetic resonance imaging and a psychometric protocol including aggression and impulsivity measures. Whole amygdala volumes were not associated with aggression or impulsivity, but significant correlations were found when dorsal/ventral amygdalae were analyzed separately. Specifically, left and right ventral amygdala volume was positively associated with motor impulsivity, and left dorsal amygdala was negatively associated with aggression. Results are discussed in terms of an activation and control model of brain-behavior relations. Potential relevance to the continuum of amygdala hyper- to hypo-activation and aggression is discussed.
Abilash Gopal; Erika Clark; Amy Allgair; Christopher D'Amato; Margery Furman; David A Gansler; Carl Fulwiler
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Psychiatry research     Volume:  211     ISSN:  1872-7123     ISO Abbreviation:  Psychiatry Res     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-01-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7911385     Medline TA:  Psychiatry Res     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  24-30     Citation Subset:  IM    
Copyright Information:
Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.
Department of Psychiatry, University of California, San Francisco, CA, USA.
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