Motor nerve conduction studies in the median and ulnar nerves in old adults over 80 years of age.

The influence of age on nerve conductions in the median and ulnar nerves was studied. Terminal conduction times, motor nerve conduction velocities (MCV) and F-wave conduction velocities (FCV) on subjects of the ninth decade (older group) were compared with those of the third decade (younger group). MCV and FCV were significantly slower in the older group than in the younger one. The reductions of conduction velocities including MCV and FCV were marked on proxial segment.