Cited by 99Neural and Behavioral Psychology StudiesTreatment of Major DepressionAnxiety, Depression, Psychometrics, Treatment, Cognitive Processes

Affective context interferes with cognitive control in unipolar depression: an fMRI investigation

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Dichter, Gabriel S., Felder, Jennifer N., Smoski, Moria J.·2009·Journal of Affective Disorders

Abstract

Background Unipolar major depressive disorder (MDD) is characterized by aberrant amygdala responses to sad stimuli and poor cognitive control, but the interactive effects of these impairments are poorly understood.Aim To evaluate brain activation in MDD in response to cognitive control stimuli embedded within sad and neutral contexts.Method Fourteen adults with MDD and fifteen matched controls participated in a mixed block/event-related functional magnetic resonance imaging (fMRI) task that presented oddball target stimuli embedded within blocks of sad or neutral images.Results Target events activated similar prefrontal brain regions in both groups. However, responses to target events embedded within blocks of emotional images revealed a clear group dissociation. During neutral blocks, the control group demonstrated greater activation to targets in the midfrontal gyrus and anterior cingulate relative to the MDD group, replicating previous findings of prefrontal hypo-activation in MDD samples to cognitive control stimuli. However, during sad blocks, the MDD group demonstrated greater activation in a number of prefrontal regions, including the mid-, inferior, and orbito-frontal gyri and the anterior cingulate, suggesting that relatively more prefrontal brain activation was required to disengage from the sad images to respond to the target events.Limitations A larger sample size would have provided greater statistical power, and more standardized stimuli would have increased external validity.Conclusions This double dissociation of prefrontal responses to target events embedded within neutral and sad context suggests that MDD impacts not only responses to affective events, but extends to other cognitive processes carried out in the context of affective engagement. This implies that emotional reactivity to sad events in MDD may impact functioning more broadly than previously understood.

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Authors
Dichter, G. S., Felder, J. N., & Smoski, M. J.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • Duke University (US)
Corresponding author
Dichter, Gabriel S.
Venue
Journal of Affective Disorders
Publisher
Elsevier BV
Published
2009-04
Volume
114
Issue
1-3
Pages
131-142
ISSN
0165-0327 (ISSN-L)
OpenAlex
W2066057738
Cited by
99
References
57
Citations by year
2026: 3 · 2025: 2 · 2024: 8 · 2023: 3 · 2022: 1 · 2021: 4 · 2020: 3 · 2019: 3 · 2018: 1 · 2017: 8 · 2016: 4 · 2015: 13 · 2014: 7 · 2013: 10 · 2012: 12
FWCI
2.93
Type
journal article
Language
en
Open access
Locations
  • Journal of Affective Disorders (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (T32-HD40127)
  • National Institute of Mental Health (MH078145, T32- MH070448)
  • National Institutes of Health
  • National Center for Research Resources (K12 RR023248)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
Keywords
unipolar major depression, cognitive control, emotional context, amygdala, prefrontal cortex activation, anterior cingulate cortex, orbitofrontal cortex, emotional reactivity, oddball paradigm, double dissociation
MeSH terms
Adult, Affect, Brain, Cognition, Major Depressive Disorder, Facial Expression, Female, Frontal Lobe, Gyrus Cinguli, Humans, Image Processing, Computer-Assisted, Functional Laterality, Magnetic Resonance Imaging, Male, Middle Aged, Neuropsychological Tests, Photic Stimulation, Psychomotor Performance, Visual Perception, Case-Control Studies, Prefrontal Cortex, Young Adult

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