MECHANISM OF AGE-RELATED DIFFERENCES IN FREQUENCY DISCRIMINATION WITH BACKWARD-MASKING - SPEED OF PROCESSING OR STIMULUS PERSISTENCE

被引：11

作者：

RAZ, N ^{[1
]}

MILLMAN, D ^{[1
]}

MOBERG, PJ ^{[1
]}

机构：

[1] CHICAGO MED SCH,N CHICAGO,IL

来源：

PSYCHOLOGY AND AGING | 1990年 / 5卷 / 04期

关键词：

D O I：

10.1037/0882-7974.5.4.475

中图分类号：

R4 [临床医学]; R592 [老年病学];

学科分类号：

1002 ; 100203 ; 100602 ;

摘要：

In Experiment 1, frequency-discrimination thresholds were estimated in a 2-interval, forced-choice, backward masking procedure with a masker acoustically dissimilar to the targets. Young subjects were more efficient in escaping the effects of masking than were their elderly counterparts. In Experiment 2, young and elderly subjects performed the same task, with a masker acoustically similar to the targets and with a target-dissimilar masker. Under target-similar masking and at short target-masker intervals, the elderly demonstrated significant improvement, reaching the level of performance of the young, whereas under the target-dissimilar masker, the age-related differences were restored. Both age-related slowing of information processing and increase in stimulus persistence can account for the results of Experiment 1, but only increased stimulus persistence explains the results of Experiment 2.

引用

页码：475 / 481

页数：7