title: Age-related amplitude variations of the posterior tibial nerve spinal SEP P21 component.
abstract: The effects of aging on the amplitude of the surface-recorded tibial nerve spinal somatosensory-evoked potential P21 component (L5-T12 electrode derivation) were studied in 79 subjects. The results of this investigation indicate that a significant moderately negative correlation (r = -0.46) exists between subject age and the amplitude of component P21. These findings suggest that the absence of a P21 potential in an elderly patient does not necessarily represent evidence of neural pathology.
authors.affiliation: Department of Neurology, Henry Ford Hospital, Detroit, Mich.
authors.forename: G P
authors.initials: GP
authors.lastname: Jacobson
authors.forename: C W
authors.initials: CW
authors.lastname: Newman
authors.forename: R E
authors.initials: RE
authors.lastname: Steg
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D002648:Child; D005073:Evoked Potentials, Somatosensory; D006801:Humans; D008875:Middle Aged; D013979:Tibial Nerve / Q000502:physiology*