Reference : Brain-heart interactions reveal consciousness in non-communicating patients
Scientific journals : Article
Human health sciences : Neurology
http://hdl.handle.net/2268/216626
Brain-heart interactions reveal consciousness in non-communicating patients
English
Raimondo, Federico mailto []
Rohaut, Benjamin mailto []
Demertzi, Athina mailto [Université de Liège - ULiège > > Centre de recherches du cyclotron >]
Valente, Melanie mailto []
Engemann, Denis mailto []
Salti, Moti mailto []
Fernandez Slezak, Diego mailto []
Naccache, Lionel mailto []
Sitt, Jacobo Diego mailto []
In press
Annals of Neurology
Wiley Liss, Inc.
Yes (verified by ORBi)
International
0364-5134
1531-8249
New York
NY
[en] Objective: We here aimed at characterizing heart–brain interactions in patients with disorders of consciousness. We tested how this information impacts data-driven classification between unresponsive and minimally conscious patients. Methods: A cohort of 127 patients in vegetative state/unresponsive wakefulness syndrome (VS/UWS; n570) and minimally conscious state (MCS; n557) were presented with the local–global auditory oddball paradigm, which dis- tinguishes 2 levels of processing: short-term deviation of local auditory regularities and global long-term rule viola- tions. In addition to previously validated markers of consciousness extracted from electroencephalograms (EEG), we computed autonomic cardiac markers, such as heart rate (HR) and HR variability (HRV), and cardiac cycle phase shifts triggered by the processing of the auditory stimuli. Results: HR and HRV were similar in patients across groups. The cardiac cycle was not sensitive to the processing of local regularities in either the VS/UWS or MCS patients. In contrast, global regularities induced a phase shift of the cardiac cycle exclusively in the MCS group. The interval between the auditory stimulation and the following R peak was significantly shortened in MCS when the auditory rule was violated. When the information for the cardiac cycle modulations and other consciousness-related EEG markers were combined, single patient classification performance was enhanced compared to classification with solely EEG markers. Interpretation: Our work shows a link between residual cognitive processing and the modulation of autonomic somatic markers. These results open a new window to evaluate patients with disorders of consciousness via the embodied paradigm, according to which body–brain functions contribute to a holistic approach to conscious processing.
http://hdl.handle.net/2268/216626
10.1002/ana.25045

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Raimondo2017-Annals_of_Neurology.pdfPublisher postprint1.16 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.