Absence of spinal N13-P13 and normal scalp far-field P14 in a patient with syringomyelia.
Short latency somatosensory evoked potentials to median or ulnar nerve stimulation were recorded in a patient with syringomyelia. Scalp-recorded far-field P14 was clearly preserved, but spinal N13-P13 components disappeared. Our findings support the hypothesis that spinal N13-P13 is generated by structures intrinsic to the cervical cord, most likely in the ventral central gray matter.
Urasaki
E
E
Department of Neurosurgery, University of Occupational and Environmental Health, Kitakyushu, Japan.
Wada
S
S
Kadoya
C
C
Matsuzaki
H
H
Yokota
A
A
Matsuoka
S
S
D000328:Adult; D005073:Evoked Potentials, Somatosensory; D006801:Humans; D008297:Male; D013116:Spinal Cord / Q000503:physiopathology; D013595:Syringomyelia / Q000503:physiopathology*