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About
This study employs functional magnetic resonance imaging to compare brain activation patterns during a depressive episode in patients diagnosed with bipolar disorder, major depressive disorder, and a group of healthy control subjects. Depressed patients will be treated with a combination of fluoxetine and olanzapine and undergo MRI scans before, during, and after pharmacotherapy.
Full description
The purpose of this study is to further characterize the neural correlates of affective processing in BD and MDD subjects using fMRI. Subjects who meet criteria for a major depressive episode in the context of BD (n=15); MDD (n=15) and a group of psychiatrically unaffected control subjects (CS, n=15) will undergo four fMRI scans while experiencing a temporary mood induction through the presentation of affective imagery from the International Affective Picture System (IAPS). Both BD and MDD subjects will receive the same combination pharmacotherapy to treat the depression, with fMRI data acquired before, and 1, 3, 6 weeks following pharmacotherapy initiation. Positive, negative, and neutral affective visual stimuli will be presented in a blocked design.
Comparison(s): The effects of time and group will be analyzed in factorial models. Regions of interest that demonstrate significant group-by-time interactions will be further correlated with self-report and clinician-rated psychometric indices.
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Inclusion and exclusion criteria
Inclusion Criteria: (All three groups)
Additional inclusion criteria for the patient groups include
Exclusion Criteria: (All three groups)
Additional exclusion criteria for the BD and MDD group include:
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42 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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