Amplitude/standard deviation functions of somatosensory evoked potential recovery in healthy elderly and young adults.
Adjusted recovery ratios of somatosensory evoked potentials were computed using Callaway's amplitude/standard deviation measure of electrocortical activity in post-stimulus epochs of 15-30, 31-50, 51-90, and 90-240 msec. Significant differences in amount of recovery and shape of the recovery functions between young and elderly adults were observed only in early (15-90 msec) phases of the responses; subjects aged 60-70 did not differ from those aged 71-80. The results demonstrate a complex interaction between age and recovery, with stability of recovery functions after age 60.
D000368:Aged; D000375:Aging; D005073:Evoked Potentials, Somatosensory; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction; D011930:Reaction Time; D013997:Time Factors