Age differences in the maintenance and restructuring of movement preparation.
Age differences in the maintenance and restructuring of movement preparation.
复制标题
运动准备的维持和重组存在年龄差异。
DOI：
10.1037//0882-7974.6.3.451
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发表时间：
1991
影响因子：
3.7
通讯作者：
Goggin,NL
中科院分区：
文献类型：
--
作者：
Amrhein,PC;Stelmach,GE;Goggin,NL
在 2 项实验中，56 名老年人（65-78 岁）和年轻 Ss（20-28 岁）使用刺激预先范式执行简单反应时间 (RT)、选择 RT 和运动计划重组任务。在实验 1 中，预提示显示 (200 ms) 和准备间隔 (250、500、750 或 1,000 ms) 通过实验确定。在实验2中，预提示显示间隔是S确定的。对于重组任务，预提示指定了 75% 试验的响应，从而能够根据手臂和方向的运动参数准备运动计划。在其余的试验中，预兆错误地指定了响应，需要重组运动计划。年长但不年轻的 Ss 重组方向的运动计划比手臂或这两个参数更快。这些发现表明，老年人对方向的运动计划维护能力比对手臂的运动计划维护能力差，因此相对于年轻人，老年人在运动准备过程中表现出功能变化。（PsycINFO 数据库记录 (c) 2016 APA，保留所有权利）
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 restructuring. Elderly, but not young, Ss 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.(PsycINFO Database Record (c) 2016 APA, all rights reserved)