Journal
BIOLOGICAL PSYCHIATRY-COGNITIVE NEUROSCIENCE AND NEUROIMAGING
Volume 2, Issue 2, Pages 115-122Publisher
ELSEVIER
DOI: 10.1016/j.bpsc.2016.11.009
Keywords
Cognition; Cognitive enhancer; Depression; Memory; Modafinil; Treatment
Categories
Funding
- Medical Research Council (MRC) [G1000183]
- Wellcome Trust [103838, 093875/Z/10/Z]
- Islamic Development Bank Cambridge International Scholarship
- Bahcesehir University
- Janssen/JJ
- Peak
- MRC [G1000183, MC_UU_00005/12, MC_U105597119] Funding Source: UKRI
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BACKGROUND: Cognitive dysfunction is a core feature of depression and tends to persist even after mood symptoms recover, leading to detrimental effects on clinical and functional outcomes. However, most currently available treatments have not typically addressed cognition. Modafinil has been shown to have beneficial effects on cognitive function and therefore has the potential to improve cognition in depression. The objective of this double-blind, placebo-controlled study was to investigate the effects of modafinil on cognitive functions in patients with remitted depression. METHODS: In total, 60 patients with remitted depression participated in the study. Cognitive functions were evaluated with tests of working memory, planning, attention, and episodic memory from the Cambridge Neuropsychological Test Automated Battery at the baseline session and after treatment. A double-blind, randomized, placebo-controlled, parallel groups design was used to assess the effects of single-dose (200 mg) modafinil (n = 30) or placebo (n = 30) on cognition and fatigue. The main outcome measures were neurocognitive test scores from the Cambridge Neuropsychological Test Automated Battery. Visual analogue scales for subjective feelings and fatigue were used as secondary measures. RESULTS: The modafinil group had significantly better performance on tests of episodic memory (p = .01, eta(2)(p) = .10) and working memory (p = .04, eta(2)(p) = .06). Modafinil did not improve planning or sustained attention. CONCLUSIONS: This study suggested that modafinil (200 mg) could improve episodic memory and working memory performance in patients with remitted depression. Modafinil may have potential as a therapeutic agent to help remitted depressed patients with persistent cognitive difficulties.
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