Cited by 26Neural and Behavioral Psychology StudiesTreatment of Major DepressionNeurotransmitter Receptor Influence on Behavior

The relationship of impulsivity and cortical thickness in depressed and non-depressed adolescents

Fradkin, Yuli, Khadka, Sabin, Bessette, Katie L., Stevens, Michael C.·2017·Brain Imaging and Behavior

Abstract

Major Depressive Disorder (MDD) is recognized to be heterogeneous in terms of brain structure abnormality findings across studies, which might reflect previously unstudied traits that confer variability to neuroimaging measurements. The purpose of this study was to examine the relationships between different types of trait impulsivity and MDD diagnosis on adolescent brain structure. We predicted that adolescents with depression who were high on trait impulsivity would have more abnormal cortical structure than depressed patients or non-MDD who were low on impulsivity. We recruited 58 subjects, including 29 adolescents (ages 12-19) with a primary DSM-IV diagnosis of MDD and a history of suicide attempt and 29 demographically-matched healthy control participants. Our GLM-based analyses sought to describe differences in the linear relationships between cortical thickness and impulsivity trait levels. As hypothesized, we found significant moderation effects in rostral middle frontal gyrus and right paracentral lobule cortical thickness for different subscales of the Barratt Impulsiveness Scale. However, although these brain-behavior relationships differed between diagnostic study groups, they were not simple additive effects as we had predicted. For the middle frontal gyrus, non-MDD participants showed a strong positive association between cortical thickness and BIS-11 Motor scores, while MDD-diagnosed participants showed a negative association. For Non-Planning Impulsiveness, paracentral lobule cortical thickness was observed with greater impulsivity in MDD, but no association was found for controls. In conclusion, the findings confirm that dimensions of impulsivity have discrete neural correlates, and show that relationships between impulsivity and brain structure are expressed differently in adolescents with MDD compared to non-MDD.

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Crossref · 10.1007/s11682-016-9612-8

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Authors
Fradkin, Y., Khadka, S., Bessette, K. L., & Stevens, M. C.
Affiliations
  • Rutgers, The State University of New Jersey (US)
  • Hartford Hospital (US)
Corresponding author
Stevens, Michael C.
Venue
Brain Imaging and Behavior
Published
2016-10-13
Volume
11
Issue
5
Pages
1515-1525
ISSN
  • 1931-7557 (ISSN-L)
  • 1931-7565
OpenAlex
W2531249409
Cited by
26
References
87
Citations by year
2025: 2 · 2024: 1 · 2023: 4 · 2022: 4 · 2021: 2 · 2020: 2 · 2019: 7 · 2018: 2 · 2017: 2
FWCI
2.33
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Imaging and Behavior (publishedVersion)
  • PubMed (publishedVersion)
Funders
American Foundation for Suicide Prevention
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
major depressive disorder, adolescent depression, trait impulsivity, cortical thickness, Barratt Impulsiveness Scale, middle frontal gyrus, paracentral lobule, suicide attempts, brain-behavior relationship
MeSH terms
Adolescent, Cerebral Cortex, Child, Major Depressive Disorder, Female, Humans, Image Processing, Computer-Assisted, Impulsive Behavior, Magnetic Resonance Imaging, Male, Neuropsychological Tests, Organ Size, Suicide, Attempted, Linear Models

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