TY - JOUR
T1 - Age differences in the maintenance and restructuring of movement preparation.
AU - Amrhein, P. C.
AU - Stelmach, G. E.
AU - Goggin, N. L.
PY - 1991
Y1 - 1991
N2 - In 2 experiments, elderly and young subjects performed simple reaction time, choice reaction time, and movement plan restructuring tasks, using a stimulus precuing paradigm. In Experiment 1, the precue display (200 ms) and preparation interval (250, 500, 750, or 1,000 ms) were experimentally determined. In Experiment 2, the precue display interval was subject determined. For the restructuring task, the precue specified the response on 75% of the trials, enabling movement plan preparation with respect to movement parameters of arm and direction. On remaining trials, the precue incorrectly specified the response, requiring movement plan restructuring. Elderly, but not young, subjects restructured a movement plan for direction more quickly than for arm or for both parameters. These findings indicate that elderly individuals have poorer movement plan maintenance for direction than for arm and thus exhibit functional change in movement preparation processes relative to young individuals.
AB - In 2 experiments, elderly and young subjects performed simple reaction time, choice reaction time, and movement plan restructuring tasks, using a stimulus precuing paradigm. In Experiment 1, the precue display (200 ms) and preparation interval (250, 500, 750, or 1,000 ms) were experimentally determined. In Experiment 2, the precue display interval was subject determined. For the restructuring task, the precue specified the response on 75% of the trials, enabling movement plan preparation with respect to movement parameters of arm and direction. On remaining trials, the precue incorrectly specified the response, requiring movement plan restructuring. Elderly, but not young, subjects restructured a movement plan for direction more quickly than for arm or for both parameters. These findings indicate that elderly individuals have poorer movement plan maintenance for direction than for arm and thus exhibit functional change in movement preparation processes relative to young individuals.
UR - http://www.scopus.com/inward/record.url?scp=0026230544&partnerID=8YFLogxK
U2 - 10.1037/0882-7974.6.3.451
DO - 10.1037/0882-7974.6.3.451
M3 - Article
C2 - 1930762
AN - SCOPUS:0026230544
SN - 0882-7974
VL - 6
SP - 451
EP - 466
JO - Psychology and aging
JF - Psychology and aging
IS - 3
ER -