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.
Rogers
R L
RL
Magnetoencephalography Laboratory, University of Texas Health Science Center, Houston.
Basile
L F
LF
Taylor
S
S
Sutherling
W W
WW
Papanicolaou
A C
AC
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*