Article (Scientific journals)
Intraoperative Localisation of the Primary Motor Cortex Using Single Electrical Stimuli
Maertens De Noordhout, Alain; Born, J. D.; Hans, Pol et al.
1996In Journal of Neurology, Neurosurgery and Psychiatry, 60 (4), p. 442-4
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Abstract :
[en] A new method of intraoperative localisation of the primary motor cortex is described, based on the application of single anodal electric pulses to the brain surface. Patients were anaesthetised with propofol infusion, and neuromuscular blockade was temporarily alleviated to allow recording of surface EMG responses (CMAPs) to the stimuli. Primary motor areas could be localised in 18/19 patients studied. In the other patient, no responses were elicited, as the operative field was posterior to the motor cortex. When compared with MEPs elicited in awake patients by magnetic stimuli, responses to intraoperative anodal stimulation were of small amplitude (usually less than 10% of MEPs) and their latency was some 1 to 2 ms longer. One month after the operation, only 1/19 patients was left with a slight muscle weakness, although seven showed preoperative motor deficit. The procedure proved easy and fast, needing no preliminary surgery or time consuming preparation. It did not induce any detectable side effects.
Disciplines :
Neurology
Author, co-author :
Maertens De Noordhout, Alain  ;  Centre Hospitalier Universitaire de Liège - CHU > Neurologie CHR
Born, J. D.
Hans, Pol ;  Université de Liège - ULiège > Département des sciences cliniques > Anesthésie et réanimation
Remacle, J. M.
Delwaide, P. J.
Language :
English
Title :
Intraoperative Localisation of the Primary Motor Cortex Using Single Electrical Stimuli
Publication date :
April 1996
Journal title :
Journal of Neurology, Neurosurgery and Psychiatry
ISSN :
0022-3050
eISSN :
1468-330X
Publisher :
BMJ Publishing Group, United Kingdom
Volume :
60
Issue :
4
Pages :
442-4
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 December 2011

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