[Effects of aging on hand coordination--a quantitative analysis of ability to track moving targets].
D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D004562:Electrocardiography; D005260:Female; D006225:Hand / Q000502:physiology*; D006801:Humans; D008297:Male; D008568:Memory; D011597:Psychomotor Performance / Q000502:physiology*