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The neural substrates of affective processing toward positive and negative affective pictures in patients with major depressive disorder

Cited 59 time in Web of Science Cited 64 time in Scopus
Authors
Lee, Byeong-Taek; Lee, Boung-Chul; Choi, Ihn-Geun; Lyoo, In Kyoon; Ham, Byung-Joo
Issue Date
2007-08-11
Publisher
Elsevier
Citation
Prog Neuropsychopharmacol Biol Psychiatry. 2007 Oct 1;31(7):1487-92. Epub 2007 Jul 5.
Keywords
AdultAffect/*physiologyAmygdala/physiopathologyDepressive Disorder, Major/*physiopathology/*psychologyEmotions/*physiologyFemaleFunctional LateralityHippocampus/physiologyHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleMiddle AgedOxygen/bloodPhotic StimulationPrefrontal Cortex/physiopathologyPsychiatric Status Rating Scales
Abstract
Previous studies examining neural responses to emotional stimuli in individuals with major depressive disorder (MDD) have indicated increased responses within the left amygdala to sad faces, and increased activity within the visual cortex and striatum to expressions of happiness. Using functional magnetic resonance imaging (fMRI), the current study measured neural responses to neutral, positive and negative pictures of the International Affective Picture System in 15 healthy individuals and 15 patients with MDD. Depressed individuals demonstrated lower activity in the right hippocampus and the right insula to negative affective pictures, whereas they showed lower activity in the right anterior cingulate cortex and the left insula to positive pictures. However, within the MDD group, the severity of depression correlated with the activity of the left amygdala, bilateral inferior orbitofrontal areas, and the left insula to negative pictures, whereas there were no clear indications of association between specific cerebral regions and positive pictures. Our findings indicate that preferential decreases in the left amygdala in response to negative pictures might be involved in the processing of emotional stimuli in depressed individuals. Also, these findings suggest that the bilateral inferior orbitofrontal cortices and left amygdala may be preferentially recruited in MDD patients, but not in healthy individuals.
ISSN
0278-5846 (Print)
Language
English
URI
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=17688985

https://hdl.handle.net/10371/24572
DOI
https://doi.org/10.1016/j.pnpbp.2007.06.030
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Appears in Collections:
College of Medicine/School of Medicine (의과대학/대학원)Psychiatry (정신과학전공)Journal Papers (저널논문_정신과학전공)
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