title: SIMULTANEOUS RECORDINGS OF SCALP AND EPIDURAL SOMATOSENSORY-EVOKED RESPONSES IN MAN.
abstract: The calvarium and scalp markedly attenuate the amplitude, but do not alter the latency or frequency, of somatosensory responses evoked by electrical stimulation of the contralateral median nerve in man. With scalp electrodes no significant potentials are obtained that are not also present in the epidural recordings when proper averaging techniques are used. The somatosensory-evoked response recorded with scalp electrodes in man appears to be the result of brain activity.
mesh_terms: D035843:Biomedical Research; D004388:Dura Mater; D004558:Electric Stimulation; D004594:Electrophysiology; D005073:Evoked Potentials, Somatosensory; D006801:Humans; D008297:Male; D008475:Median Nerve; D009493:Neurosurgery; D020734:Parkinsonian Disorders; D010525:Peripheral Nerves; D012535:Scalp
keywords: CLINICAL RESEARCH; DURA MATER; ELECTRIC STIMULATION; ELECTROPHYSIOLOGY; MEDIAN NERVE; NEUROSURGERY; PARKINSONISM; PERIPHERAL NERVES; SCALP