Aging and the restructuring of precued movements.
Aging and the restructuring of precued movements.
复制标题
老化和预先运动的重组。
DOI：
10.1037//0882-7974.3.2.151
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发表时间：
1988
影响因子：
3.7
通讯作者：
Amrhein,PC
中科院分区：
文献类型：
--
作者：
Stelmach,GE;Goggin,NL;Amrhein,PC
一个预提示范例被用来检验重组一个计划好的运动反应所需要的时间。两组受试者，一个年轻组和一个年老组，执行一个瞄准任务，其中75%的试验不涉及运动参数的变化。在剩下的试验中，受试者必须改变一个或多个运动参数。老年受试者在两种情况下都有较慢的反应时间、运动时间和更多的错误。总体而言，老年受试者的RTs相对较长，独立于重新调整运动计划。手臂和方向的制备也表现出成比例的增加，但在制备程度上发现了不同的老化效应。与长动作相比，老年受试者准备短动作的速度较慢，而年轻受试者则表现出相反的趋势。这些结果表明，随着年龄的增长，与手臂和方向的运动计划重组有关的操作发生了处理速率的变化，而与范围有关的操作发生了更广泛的变化。
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, differential aging effects were found for preparation of extent. Elderly subjects were slower preparing short movements compared with long movements, whereas young subjects showed the opposite trend. These results suggest that with advancing age, operations concerned with movement-plan restructuring for arm and direction undergo change in processing rate, whereas operations for extent undergo more extensive alteration.