Research Repository

Emotive interference during cognitive processing in major depression: An investigation of lower alpha 1 activity

Segrave, RA and Thomson, RH and Cooper, NR and Croft, RJ and Sheppard, DM and Fitzgerald, PB (2012) 'Emotive interference during cognitive processing in major depression: An investigation of lower alpha 1 activity.' Journal of Affective Disorders, 141 (2-3). pp. 185-193. ISSN 0165-0327

Full text not available from this repository.


Background: Individuals with Major Depressive Disorder (MDD) tend to be more susceptible to distraction by negative emotional material than their non-depressed counterparts. This extends to an enhanced vulnerability to interference from mood-congruent stimuli during cognitive processing. The current study investigated the electrophysiological correlates of competing cognitive and emotional processing demands in MDD. Methods: Event-related alpha activity within the lower alpha 1 band was examined during the online information retention phase of a non-emotive WM task with extraneous emotional stimuli (positive, negative and neutral) presented as background images. EEG activity over posterior parietal cortex was compared between 15 acutely depressed and 16 never depressed right-handed women. Results: A valence specific dissociation in lower alpha 1 activity was observed between the two groups, consistent with greater attentional resource allocation to positive distracters in control participants and to negative distracters in MDD participants. No group differences were seen when neutral distracters were displayed. Conclusions: These results demonstrate that activity within the lower alpha 1 band is sensitive to competing emotional and cognitive processing demands and highlight the importance of posterior parietal regions in depression-related susceptibility to affective distractibility during cognitive processing. © 2012 Elsevier B.V.

Item Type: Article
Uncontrolled Keywords: EEG; Major depression; Lower alpha 1; Working memory; Emotional-cognitive interaction; Information processing bias
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Faculty of Science and Health
Faculty of Science and Health > Psychology, Department of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 06 Jul 2012 12:06
Last Modified: 18 Aug 2022 11:03

Actions (login required)

View Item View Item