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Cognitive control functions in unipolar major deepression with or without co-morbid anxiety disorder

Lyche, Pia Elisabeth; Jonassen, Rune; Stiles, Tore C; Ulleberg, Pål; Landrø, Nils Inge
Journal article, Peer reviewed
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fpsyt-01-00149.pdf (320.7Kb)
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http://hdl.handle.net/11250/2357768
Utgivelsesdato
2010
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  • Institutt for psykologi [1965]
  • Publikasjoner fra CRIStin - NTNU [26591]
Originalversjon
Frontiers in Psychiatry 2010, 1:1-9   10.3389/fpsyt.2010.00149
Sammendrag
Background: Impaired cognitive control functions have been demonstrated in both major

depression (MDD) and anxiety disorder (A), but few studies have systematically examined the

impact of MDD with co-morbid A (MDDA), which is the main aim of this study. Method: We

compared patients with MDD with (MDDA; n = 24) and without co-morbid A (n = 37) to a group

of healthy controls (HC; n = 92) on three subtests from the Cambridge Neuropsychological Test

Automated Battery; intra–extra dimensional, stop signal task, and spatial working memory. These

tasks correspond to a theoretical model consisting of three separable but interrelated executive

control functions: Shifting, Inhibition, and Updating. A simple psychomotor speed measure was

also included. Results: After controlling for age, gender, and education level, the results showed

that the MDDA group displayed significantly impaired performance on the functions Shifting and

Updating compared to HC. There emerged no significant differences between any of the patient

groups and HC regarding Inhibition. The pure MDD group did not display dysfunctions relative

to the HC group on the main executive control variables, but displayed slowed psychomotor

speed. Contrary to expectation there were no significant differences between the MDDA and

the MDD groups. Conclusion: Co-morbid anxiety should be taken into account when studying

cognitive control functions in major depression.
Utgiver
Frontiers
Tidsskrift
Frontiers in Psychiatry

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