Killed-End Corticospinal Motor Evoked Potential (MEP) in Patients with Spinal Cord Injury
A monophasic positive potential is recorded when a nerve impulse approaches but never passes beyond the recording site. This type of potential has been termed the killed end potential (KP). Studies in experimental animals have repeatedly suggested a clinical value for the KP in localizing the level of spinal cord lesions [3, 4, 9]. The KP has been recorded intraoperatively in patients with spinal cord lesions [7, 10, 11]. We have also demonstrated that the KP of spinospinal responses can be readily recorded preoperatively in patients with eletrodes inserted percutaneously into the spinal epidural space and indeed has a value for localizing lesions .
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