title: Impedance and spontaneous electrical activity as a localizing method in percutaneous spinal surgery.
abstract: Simultaneous recording of impedance and spontaneous electrical activity of the spinal cord was accomplished by use of a roving electrode. The method for this double monitoring in cats and in human surgery is described. The impedance method revealed a significant and well-delineated difference between the gray and white matter of the spinal cord which can be seen clearly on the recording. Well-localized high electrical activity was observed in the anterior horn.
mesh_terms: D000200:Action Potentials; D000818:Animals; D002415:Cats; D002818:Cordotomy; D006801:Humans; D013116:Spinal Cord / Q000502:physiology*