Article (Scientific journals)
Neural substrates of rumination tendency in non-depressed individuals.
Piguet, Camille; Desseilles, Martin; Sterpenich, Virginie et al.
2014In Biological Psychology, 103, p. 195-202
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Keywords :
Adolescent; Adult; Attention/physiology; Brain/physiology; Brain Mapping; Cognition/physiology; Entorhinal Cortex/physiology; Female; Functional Neuroimaging; Humans; Magnetic Resonance Imaging; Male; Obsessive Behavior/physiopathology; Thinking; Visual Cortex/physiology; Young Adult; Depression; RRS; Resting state; Rumination; fMRI
Abstract :
[en] The tendency to ruminate, experienced by both healthy individuals and depressed patients, can be quantified by the Ruminative Response Scale (RRS). We hypothesized that brain activity associated with rumination tendency might not only occur at rest but also persist to some degree during a cognitive task. We correlated RRS with whole-brain fMRI data of 20 healthy subjects during rest and during a face categorization task with different levels of cognitive demands (easy or difficult conditions). Our results reveal that the more subjects tend to ruminate, the more they activate the left entorhinal region, both at rest and during the easy task condition, under low attentional demands. Conversely, lower tendency to ruminate correlates with greater activation of visual cortex during rest and activation of insula during the easy task condition. These results indicate a particular neural marker of the tendency to ruminate, corresponding to increased spontaneous activity in memory-related areas, presumably reflecting more internally driven trains of thoughts even during a concomitant task. Conversely, people who are not prone to ruminate show more externally driven activity.
Disciplines :
Psychiatry
Author, co-author :
Piguet, Camille
Desseilles, Martin ;  Université de Liège - ULiège
Sterpenich, Virginie
Cojan, Yann
Bertschy, Gilles
Vuilleumier, Patrik
Language :
English
Title :
Neural substrates of rumination tendency in non-depressed individuals.
Publication date :
2014
Journal title :
Biological Psychology
ISSN :
0301-0511
eISSN :
1873-6246
Publisher :
Elsevier, Netherlands
Volume :
103
Pages :
195-202
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2014 Elsevier B.V. All rights reserved.
Available on ORBi :
since 14 January 2016

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