title: Percutaneous S1 root somatosensory evoked potential.
abstract: Spinal and cortical evoked potentials were recorded in response to percutaneous stimulation of the first sacral root which was accessed via the dorsal sacral foramen. A very high amplitude spinal response is easily recordable using surface electrodes. Cortical responses were inconsistently elicited and had highly variable latencies, amplitudes and morphologies.
authors.affiliation: Department of Neurology, College of Medicine, University of Arizona, Tucson 85724, USA.
authors.forename: C R
authors.initials: CR
authors.lastname: Bamford
authors.forename: K
authors.initials: K
authors.lastname: Graeme
mesh_terms: D000328:Adult; D004558:Electric Stimulation; D004576:Electromyography; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D005260:Female; D005727:Ganglia, Spinal / Q000502:physiology*; D006801:Humans; D008297:Male; D011930:Reaction Time / Q000502:physiology; D012867:Skin / Q000294:innervation*