Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/44980
Title: Specific Frontostriatal Circuits for Impaired Cognitive Flexibility and Goal-Directed Planning in Obsessive-Compulsive Disorder: Evidence From Resting-State Functional Connectivity.
Authors: Vaghi, MM
Vértes, PE
Kitzbichler, MG
Apergis-Schoute, AM
van der Flier, FE
Fineberg, NA
Sule, A
Zaman, R
Voon, V
Kundu, P
Bullmore, ET
Robbins, TW
First Published: 11-Aug-2016
Publisher: Elsevier for Society of Biological Psychiatry
Citation: Biological Psychiatry, 2016, 81 (8), pp. 708-717
Abstract: BACKGROUND: A recent hypothesis has suggested that core deficits in goal-directed behavior in obsessive-compulsive disorder (OCD) are caused by impaired frontostriatal function. We tested this hypothesis in OCD patients and control subjects by relating measures of goal-directed planning and cognitive flexibility to underlying resting-state functional connectivity. METHODS: Multiecho resting-state acquisition, combined with micromovement correction by blood oxygen level-dependent sensitive independent component analysis, was used to obtain in vivo measures of functional connectivity in 44 OCD patients and 43 healthy comparison subjects. We measured cognitive flexibility (attentional set-shifting) and goal-directed performance (planning of sequential response sequences) by means of well-validated, standardized behavioral cognitive paradigms. Functional connectivity strength of striatal seed regions was related to cognitive flexibility and goal-directed performance. To gain insights into fundamental network alterations, graph theoretical models of brain networks were derived. RESULTS: Reduced functional connectivity between the caudate and the ventrolateral prefrontal cortex was selectively associated with reduced cognitive flexibility. In contrast, goal-directed performance was selectively related to reduced functional connectivity between the putamen and the dorsolateral prefrontal cortex in OCD patients, as well as to symptom severity. Whole-brain data-driven graph theoretical analysis disclosed that striatal regions constitute a cohesive module of the community structure of the functional connectome in OCD patients as nodes within the basal ganglia and cerebellum were more strongly connected to one another than in healthy control subjects. CONCLUSIONS: These data extend major neuropsychological models of OCD by providing a direct link between intrinsically abnormal functional connectivity within dissociable frontostriatal circuits and those cognitive processes underlying OCD symptoms.
DOI Link: 10.1016/j.biopsych.2016.08.009
eISSN: 1873-2402
Links: https://www.sciencedirect.com/science/article/pii/S0006322316326701?via%3Dihub
http://hdl.handle.net/2381/44980
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © the authors, 2016. This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Description: Supplementary material cited in this article is available online at http://dx.doi.org/10.1016/j.biopsych.2016.08.009
Appears in Collections:Published Articles, Dept. of Neuroscience, Psychology and Behaviour



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