Sustained-attention capacity in young and older adults.
Sustained-attention capacity in young and older adults.
复制标题
年轻人和老年人的持续注意力能力。
DOI：
10.1037//0882-7974.4.3.339
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发表时间：
1989
影响因子：
3.7
通讯作者：
Greenwood,P
中科院分区：
文献类型：
--
作者：
Parasuraman,R;Nestor,P;Greenwood,P
年轻人（21-29岁）和老年人（65-78岁）的持续注意力的能力进行了检查，使用高事件率的数字识别警觉任务，在3个水平的刺激退化。增加刺激退化导致命中率的降低和命中率的更大幅度的下降超过块（增加警惕递减）。敏感性（d '）下降，只有在最高水平的刺激降解块。老年人有较低的命中率，并表现出更大的警觉性递减比年轻的成年人，特别是当刺激是高度退化。然而，这两个年龄组表现出相同的模式，稳定的敏感性时，刺激降解是中度，敏感性随着时间的推移，当刺激降解是高的。结果表明，持续分配的能力，反映在敏感性的时间变化的过程中，在年轻人和老年人类似。（PsycInfo数据库记录（c）2016阿帕，保留所有权利）
The sustained-attention capacity of young (21–29 years) and older (65–78 years) adults was examined using a high-event rate digit-discrimination vigilance task presented at 3 levels of stimulus degradation. Increased stimulus degradation led to a reduction in the hit rate and to a greater decline in hit rate over blocks (increased vigilance decrement). Sensitivity (d') declined over blocks only at the highest level of stimulus degradation. Older adults had a lower hit rate and showed greater vigilance decrement than young adults, particularly when stimuli were highly degraded. However, both age groups showed the same pattern of stability in sensitivity when stimulus degradation was moderate, and sensitivity decrement over time when stimulus degradation was high. The results suggest that the process of sustained allocation of capacity—as reflected in temporal changes in sensitivity—operates similarly in young and older adults.(PsycINFO Database Record (c) 2016 APA, all rights reserved)