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January 2016

The Importance of Assessing Neural Trajectories in Pediatric Depression

Author Affiliations
  • 1Department of Psychology, Stanford University, Stanford, California
  • 2Department of Psychiatry, Stanford University, Stanford, California

Copyright 2016 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.

JAMA Psychiatry. 2016;73(1):9-10. doi:10.1001/jamapsychiatry.2015.2453

In this issue of JAMA Psychiatry, Luby et al1 report neuroimaging findings from a longitudinal study of 193 youths who were carefully assessed for clinical depression since preschool and underwent neuroimaging multiple times during early adolescence. Using growth curve modeling, Luby and colleagues characterized trajectories of cortical structure as a function of depression. They found that global volume of gray matter, indexed by cortical thickness, declined more steeply in adolescents with more severe depression. Given that the age range modeled here is characterized by a decrease in volume of gray matter that is posited to reflect synaptic pruning, this finding suggests that synaptic pruning is particularly aggressive in individuals who have experienced symptoms of depression.

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