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A role for the precuneus in thought–action fusion: Evidence from participants with significant obsessive–compulsive symptoms

Jones, Rhiannon and Bhattacharya, Joydeep. 2013. A role for the precuneus in thought–action fusion: Evidence from participants with significant obsessive–compulsive symptoms. NeuroImage: Clinical, 4, pp. 112-121. ISSN 2213-1582 [Article]

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Abstract or Description

Likelihood thought–action fusion (TAF-L) refers to a cognitive bias in which individuals believe that the mere thought of a negative event increases its likelihood of occurring in reality. TAF-L is most commonly associated with obsessive–compulsive disorder (OCD) but is also present in depression, generalized anxiety disorder and psychosis. We induced TAF-L in individuals with high (High-OC, N = 23) and low (Low-OC, N = 24) levels of OC traits, and used low resolution electromagnetic tomography (LORETA) to localise the accompanying electrical brain activity patterns. The results showed greater TAF-L in the High-OC than in the Low-OC group (p < .005), which was accompanied by significantly greater upper beta frequency (19–30 Hz) activity in the precuneus (p < .05). Further, the precuneus activity was positively correlated with self-reported magnitude of TAF-L (p < .01), suggesting a specific role of this region in this cognitive bias. Results are discussed with reference to self-referential processing and the default-mode network.

Item Type:

Article

Identification Number (DOI):

https://doi.org/10.1016/j.nicl.2013.11.008

Keywords:

Thought–action fusion; Electroencephalography; Precuneus; Default mode network; Obsessive–compulsive disorder

Departments, Centres and Research Units:

Psychology

Dates:

DateEvent
18 November 2013Accepted
27 November 2013Published

Item ID:

10818

Date Deposited:

28 Oct 2014 16:01

Last Modified:

21 Feb 2019 14:13

Peer Reviewed:

Yes, this version has been peer-reviewed.

URI:

http://research.gold.ac.uk/id/eprint/10818

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