alexa Pattern of impaired working memory during major depression.


Journal of Psychiatry

Author(s): Rose EJ, Ebmeier KP, Rose EJ, Ebmeier KP

Abstract Share this page

Abstract BACKGROUND: The aim of this study was to assess working memory (WM) in patients with major depressive disorder (MDD), using a robust parametric WM task (the n-back task). METHODS: Twenty patients with MDD and twenty healthy controls completed a visual version of the paradigm, comprising four levels of task difficulty (i.e. 0-, 1-, 2-, and 3-back). Performance accuracy and reaction time (RT) were measured at each difficulty level. RESULTS: In comparison with controls, patients with MDD exhibited slower RTs (F((1,38)) = 25.16, p < 0.001), and reduced accuracy (F((1,38)) = 5.93, p < 0.001). There was no diagnosis-specific effect of task difficulty on performance accuracy. However, the faster response to memory (1-3-back) than to shadowing (0-back) tasks observed in controls was not as pronounced in patients. CONCLUSIONS: These observations support a relatively specific impairment of WM/central executive function in MDD, which may potentially mediate the diverse pattern of cognitive dysfunction noted in MDD. The parametric n-back task is applicable to subjects with MDD and yields results interpretable across the dimensions of task difficulty and performance in controls and patients. This article was published in J Affect Disord and referenced in Journal of Psychiatry

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version