Article (Scientific journals)
Assessing consciousness in coma and related states using transcranial magnetic stimulation combined with electroencephalography.
Gosseries, Olivia; Thibaut, Aurore; Boly, Mélanie et al.
2014In Annales Françaises d'Anesthésie et de Réanimation
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Keywords :
Anesthesia; Minimally conscious state; Brain stimulation; Disorders of consciousness; Electroencephalography; Locked-in syndrome; Sleep; Transcranial magnetic stimulation; Unresponsive wakefulness syndrome; Vegetative state; Anesthésie; Sommeil; Stimulation cérébrale; Stimulation magnétique transcrânienne; Syndrome d’éveil non-répondant; Troubles de la conscience; État végétatif; Electroencéphalographie; Etat de conscience minimale
Abstract :
[en] Thanks to advances in medical care, an increased number of patients recover from coma. However, some remain in vegetative/unresponsive wakefulness syndrome or in a minimally conscious state. Detection of awareness in severely brain-injured patients is challenging because it relies on behavioral assessments, which can be affected by motor, sensory and cognitive impairments of the patients. Other means of evaluation are needed to improve the accuracy of the diagnosis in this challenging population. We will here review the different altered states of consciousness occurring after severe brain damage, and explain the difficulties associated with behavioral assessment of consciousness. We will then describe a non-invasive technique, transcranial magnetic stimulation combined with high-density electroencephalography (TMS-EEG), which has allowed us to detect the presence or absence of consciousness in different physiological, pathological and pharmacological states. Some potential underlying mechanisms of the loss of consciousness will then be discussed. In conclusion, TMS-EEG is highly promising in identifying markers of consciousness at the individual level and might be of great value for clinicians in the assessment of consciousness.
Research center :
GIGA CRC (Cyclotron Research Center) In vivo Imaging-Aging & Memory - ULiège
Disciplines :
Neurology
Author, co-author :
Gosseries, Olivia  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Thibaut, Aurore ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Boly, Mélanie ;  Université de Liège - ULiège > Département des sciences cliniques > Neurologie
Rosanova, Mario
Massimini, Marcello
Laureys, Steven  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Language :
English
Title :
Assessing consciousness in coma and related states using transcranial magnetic stimulation combined with electroencephalography.
Alternative titles :
[fr] Evaluation de la conscience chez les patients en coma et en états apparentés par stimulation magnétique transcrânienne combinée à l'électroencéphalographie
Publication date :
January 2014
Journal title :
Annales Françaises d'Anesthésie et de Réanimation
ISSN :
0750-7658
eISSN :
1769-6623
Publisher :
Elsevier, Paris, France
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 01 March 2014

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