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Resting state activity in patients with disorders of consciousness.
Soddu, Andrea; Vanhaudenhuyse, Audrey; Demertzi, Athina et al.
2011In Functional Neurology, 26 (1), p. 37-43
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Keywords :
Brain/physiopathology; Coma/physiopathology; Consciousness; Consciousness Disorders/physiopathology; Humans; Magnetic Resonance Imaging; Persistent Vegetative State/physiopathology
Abstract :
[en] Recent advances in the study of spontaneous brain activity have demonstrated activity patterns that emerge with no task performance or sensory stimulation; these discoveries hold promise for the study of higher-order associative network functionality. Additionally, such advances are argued to be relevant in pathological states, such as disorders of consciousness (DOC), i.e., coma, vegetative and minimally conscious states. Recent studies on resting state activity in DOC, measured with functional magnetic resonance imaging (fMRI) techniques, show that functional connectivity is disrupted in the task-negative or the default mode network. However, the two main approaches employed in the analysis of resting state functional connectivity data (i.e., hypothesis-driven seed-voxel and data-driven independent component analysis) present multiple methodological difficulties, especially in non-collaborative DOC patients. Improvements in motion artifact removal and spatial normalization are needed before fMRI resting state data can be used as proper biomarkers in severe brain injury. However, we anticipate that such developments will boost clinical resting state fMRI studies, allowing for easy and fast acquisitions and ultimately improve the diagnosis and prognosis in the absence of DOC patients' active collaboration in data acquisition.
Disciplines :
Neurology
Author, co-author :
Soddu, Andrea ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Vanhaudenhuyse, Audrey  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Demertzi, Athina  
Bruno, Marie-Aurélie ;  Université de Liège - ULiège > Centre de recherches du cyclotron
TSHIBANDA, Luaba ;  Centre Hospitalier Universitaire de Liège - CHU > Imagerie médicale
Di, Haibo
Melanie, Boly
Papa, Michele
Laureys, Steven  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Noirhomme, Quentin ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Language :
English
Title :
Resting state activity in patients with disorders of consciousness.
Publication date :
2011
Journal title :
Functional Neurology
ISSN :
0393-5264
eISSN :
1971-3274
Publisher :
CIC Edizioni Internationali, Roma, Italy
Volume :
26
Issue :
1
Pages :
37-43
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 January 2012

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