Format

Send to

Choose Destination
Proc Natl Acad Sci U S A. 2013 Sep 24;110(39):15638-43. doi: 10.1073/pnas.1307893110. Epub 2013 Sep 9.

Early developmental emergence of human amygdala-prefrontal connectivity after maternal deprivation.

Author information

1
Departments of Psychology and Psychiatry and Biobehavioral Services, University of California, Los Angeles, CA 90095.

Abstract

Under typical conditions, medial prefrontal cortex (mPFC) connections with the amygdala are immature during childhood and become adult-like during adolescence. Rodent models show that maternal deprivation accelerates this development, prompting examination of human amygdala-mPFC phenotypes following maternal deprivation. Previously institutionalized youths, who experienced early maternal deprivation, exhibited atypical amygdala-mPFC connectivity. Specifically, unlike the immature connectivity (positive amygdala-mPFC coupling) of comparison children, children with a history of early adversity evidenced mature connectivity (negative amygdala-mPFC coupling) and thus, resembled the adolescent phenotype. This connectivity pattern was mediated by the hormone cortisol, suggesting that stress-induced modifications of the hypothalamic-pituitary-adrenal axis shape amygdala-mPFC circuitry. Despite being age-atypical, negative amygdala-mPFC coupling conferred some degree of reduced anxiety, although anxiety was still significantly higher in the previously institutionalized group. These findings suggest that accelerated amygdala-mPFC development is an ontogenetic adaptation in response to early adversity.

KEYWORDS:

emotion regulation; fMRI; neurodevelopment; stress

PMID:
24019460
PMCID:
PMC3785723
DOI:
10.1073/pnas.1307893110
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for HighWire Icon for PubMed Central
Loading ...
Support Center