Somatosensory evoked fields and potentials following tibial nerve stimulation.
We studied evoked magnetic fields and electrical potentials following stimulation of the tibial nerve in a group of 24 normal subjects. Both magnetic and electrical recordings demonstrated a series of oscillatory patterns consisting of four peaks (two positive and two negative) occurring between 40 and 100 msec. Magnetic field source localization of all four peaks using a dipole-in-a-sphere model indicated that all four peaks emanated from the same cortical surface located within the longitudinal fissure, an area typically associated with somatosensory function.
Magnetoencephalography Laboratory, University of Texas Health Science Center, Houston.
R L
RL
Rogers
L F
LF
Basile
S
S
Taylor
W W
WW
Sutherling
A C
AC
Papanicolaou
D000328:Adult; D001921:Brain / Q000033:anatomy & histology; D004558:Electric Stimulation; D005073:Evoked Potentials, Somatosensory; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008280:Magnetics; D008297:Male; D008875:Middle Aged; D009991:Oscillometry; D013979:Tibial Nerve / Q000502:physiology*