The effect of aging on adaptive eye-hand coordination.
J Geront, Ser B Psychol Sci Soc Sci 2000 May; 55(3):151-P162
Perceptual-motor adaptability of older adults (65 and older) was assessed. Participants in two groups (younger, 20-36 years, and older, 67-87 years) pointed 100 times at a straight-ahead visual target while looking through laterally displacing prisms, with the hand visible early in the pointing movement. Aftereffect tests were administered after adaptation. Each group was then split into decay and readaptation subgroups in which respective treatments were given twice. After each treatment, aftereffect tests were readministered. Eye-hand total shift was significantly smaller for older participants, proprinceptive shift was not statistically smaller for older participants, and visual shift did not appear. Readaptation produced greater reduction in aftereffects than did decay; this effect was the same for both groups. The main conclusion is that perceptual-motor adaptability declines with advancing age.
Age-factors; Age-groups; Statistical-analysis; Coping-behavior; Muscle-function; Peripheral-motor-system; Perceptual-disorders; Performance-capability
Jinhua Guan, Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Road, MS P119, Morgantown, WV 26505-2888
The Journals of Gerontology Series B: Psychological Sciences and Social Sciences