Article (Scientific journals)
Corticospinal excitability in patients with anoxic, traumatic, and non-traumatic diffuse brain injury.
Lapitskaya, Natallia; Moerk, Sofie Kirial; Gosseries, Olivia et al.
2013In Brain Stimulation, 6 (2)
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Abstract :
[en] BACKGROUND: Transcranial magnetic stimulation (TMS) have been frequently used to explore changes in motor cortex excitability in stroke and traumatic brain injury, while the extent of motor cortex reorganization in patients with diffuse non-traumatic brain injury remains largely unknown. OBJECTIVE/HYPOTHESIS: It was hypothesized that the motor cortex excitability would be decreased and would correlate to the severity of brain injury and level of functioning in patients with anoxic, traumatic, and non-traumatic diffuse brain injury. METHODS: TMS was applied to primary motor cortices of 19 patients with brain injury (5 traumatic and 14 non-traumatic causes; on average four months after insult), and 9 healthy controls. The test parameters included resting motor threshold (RMT), short intracortical inhibition (SICI), intracortical facilitation (ICF), and short latency afferent inhibition (SAI). Excitability parameters were correlated to the severity of brain injury measured with Glasgow Coma Scale and the level of functioning assessed using the Ranchos Los Amigos Levels of Cognitive Functioning Assessment Scale and Functional Independence Measure. RESULTS: The patient group revealed a significantly decreased SICI and SAI compared to healthy controls with the amount of SICI correlated significantly to the severity of brain injury. Other electrophysiological parameters did not differ between the groups and did not exhibit any significant relationship with clinical functional scores. CONCLUSIONS: The present study demonstrated the impairment of the cortical inhibitory circuits in patients with brain injury of traumatic and non-traumatic aetiology. Moreover, the significant correlation was found between the amount of SICI and the severity of brain injury.
Disciplines :
Neurology
Author, co-author :
Lapitskaya, Natallia
Moerk, Sofie Kirial
Gosseries, Olivia  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Nielsen, Joergen Feldbaek
MAERTENS DE NOORDHOUT, Alain  
Language :
English
Title :
Corticospinal excitability in patients with anoxic, traumatic, and non-traumatic diffuse brain injury.
Publication date :
2013
Journal title :
Brain Stimulation
ISSN :
1935-861X
eISSN :
1876-4754
Publisher :
Elsevier, Netherlands
Volume :
6
Issue :
2
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2012 Elsevier Inc. All rights reserved.
Available on ORBi :
since 13 February 2013

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