Intra-operative monitoring of lower extremity motor-evoked potentials by direct cortical stimulation

• Published in: Clinical neurophysiology 2012-06, Vol.123 (6), p.1248-1254
• Main Authors: Maruta, Yuichi, Fujii, Masami, Imoto, Hirochika, Nomura, Sadahiro, Oka, Fumiaki, Goto, Hisaharu, Shirao, Satoshi, Yoshikawa, Kouichi, Yoneda, Hiroshi, Ideguchi, Makoto, Suehiro, Eiichi, Koizumi, Hiroyasu, Ishihara, Hideyuki, Kato, Shoichi, Kajiwara, Koji, Suzuki, Michiyasu
• Format: Article
• Language: English
• Subjects: Adult; Aged; Aged, 80 and over; Biological and medical sciences; Direct cortical stimulation; Electrodiagnosis. Electric activity recording; Evoked Potentials, Motor - physiology; Female; Fundamental and applied biological sciences. Psychology; Humans; Intra-operative monitoring; Intracranial Aneurysm - physiopathology; Intracranial Aneurysm - surgery; Investigative techniques, diagnostic techniques (general aspects); Lower extremity; Lower Extremity - physiology; Male; Medical sciences; Middle Aged; Monitoring, Intraoperative - methods; Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration; Motor Cortex - physiology; Motor deficit; Motor evoked potential; Muscle, Skeletal - physiology; Nervous system; Neurology; Vertebrates: nervous system and sense organs
• ISSN: 1388-2457; 1872-8952
• DOI: 10.1016/j.clinph.2011.09.025

Highlights ► We advocate a new method for lower-limb motor evoked potential (MEP) monitoring. ► This method is available in the supratentorial surgery. ► Lower-limb MEPs were consistently recorded by direct cortical stimulation. ► Optimal stimulation site was 2 cm lateral from the midline on the motor cortex. ► This monitoring technique can be applied to standard pterional craniotomy.