Age-related differences in prehension: the influence of task goals.
Age-related differences in prehension: the influence of task goals.
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与年龄相关的理解差异：任务目标的影响。
DOI：
10.1080/00222899809601324
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发表时间：
1998
影响因子：
1.4
通讯作者：
J. R. Macdonald
中科院分区：
文献类型：
--
作者：
P. Weir;B. J. Mallat;J. Leavitt;E. Roy;J. R. Macdonald
一个单一的研究报告中，年龄和任务目标的影响达到和把握动作进行了检查。10名年轻受试者和10名老年受试者到达并抓住一个圆盘（直径4.5 cm），然后（a）将其放入井中，（B）将其放入盒子中，或（c）将其扔进盒子中，所有这些都位于圆盘左侧30 cm处。从两个阶段分析了机器人的抓取运动：抓取磁盘的方法和磁盘的运输。在两个阶段观察到不同的影响作为年龄的函数。在这种方法中，老年受试者的运动时间与年轻受试者相当，但他们的相对减速和手部封闭时间更长。然而，在物体运输过程中，老年受试者比年轻受试者移动得更慢，但在相对时间上没有差异。在这两个阶段中，任务所需的精度影响了运动的持续时间和手臂减速的相对时间，这表明受试者准确地预测了任务的要求。这些结果，这是讨论有关的硬件和软件的性能限制，表明年龄相关的差异反映了在使用软件策略的变化，在两个阶段的运动。
A single study is reported in which the influence of age and task goal on reaching and grasping movements were examined. Ten young and 10 elderly subjects reached and grasped a disk (4.5-cm diameter) and then either (a) placed it in a well, (b) placed It in a box, or (c) threw it in a box, all located 30 cm to the left of the disk. The reach-to-grasp movements were analyzed over two phases: the approach to capture the disk and the transporting of the disk. Differential effects were observed over the two phases as a function of age. Over the approach, the movement times of the elderly subjects were comparable with those of the young subjects, but their relative deceleration and hand enclosing times took longer. During object transport, however, the elderly subjects moved more slowly than the young subjects did, but there were no differences in relative timing. In both phases, the precision required of the task influenced the duration of movement and the relative timing of arm deceleration, suggesting that subjects accurately anticipated the demands of the task. Those results, which are discussed in relation to hardware and software limitations on performance, suggest that the age-related differences reflect changes in the use of software strategies over the two phases of movement.
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影响因子：
3.7
作者：
Amrhein,PC;Stelmach,GE;Goggin,NL
通讯作者：
Goggin,NL
影响因子：
3.7
作者：
Stelmach,GE;Goggin,NL;Amrhein,PC
通讯作者：
Amrhein,PC
快速目标肢体运动：年龄差异和子运动的练习效果。
影响因子：
3.7
作者：
Pratt,J;Chasteen,AL;Abrams,RA
通讯作者：
Abrams,RA
运动规格时间随年龄而变化。
影响因子：
1.8
作者：
Stelmach,GE;Goggin,NL;Garcia-Colera,A
通讯作者：
Garcia-Colera,A
影响因子：
2.2
作者：
GOGGIN, NL;MEEUWSEN, HJ
通讯作者：
MEEUWSEN, HJ