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Age Differences In The Maintenance And Restructuring Of Movement Preparation, Paul Amrhein, George Stelmach, Noreen Goggin
Age Differences In The Maintenance And Restructuring Of Movement Preparation, Paul Amrhein, George Stelmach, Noreen Goggin
Department of Psychology Faculty Scholarship and Creative Works
In 2 experiments, 56 elderly (aged 65–78 yrs) and young Ss (aged 20–28 yrs) performed simple reaction time (RT), choice RT, and movement plan restructuring tasks, using a stimulus precuing paradigm. In Exp 1, the precue display (200 ms) and preparation interval (250, 500, 750, or 1,000 ms) were experimentally determined. In Exp 2, the precue display interval was S 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 …
Aging And The Restructuring Of Precued Movements, Paul Amrhein, George Stelmach, Noreen Goggin
Aging And The Restructuring Of Precued Movements, Paul Amrhein, George Stelmach, Noreen Goggin
Department of Psychology Faculty Scholarship and Creative Works
A precue paradigm was used to examine the time it takes to restructure a planned motor response. Two groups of subjects, a young group, and an elderly group, performed an aiming task in which 75% of the trials involved no change of movement parameters. On remaining trials, subjects had to change one or more of the movement parameters. Elderly subjects had slower reaction times (RTs), movement times, and made more errors in both conditions. Elderly subjects had proportionally longer RTs overall, independent of restructuring a movement plan. Preparation of arm and direction also exhibited a proportional increase in RT. However, …