Aging impairs the ability to ignore irrelevant information in frequency discrimination tasks
Aging impairs the ability to ignore irrelevant information in frequency discrimination tasks
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DOI：
10.1080/03610730600554008
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发表时间：
2006-04-01
影响因子：
1.8
通讯作者：
Jang, HS
中科院分区：
文献类型：
--
作者：
Espinoza-Varas, B;Jang, HS
采用频率辨别阈（FDT）任务研究了年龄对无关听觉信息忽略能力的影响。FDTs被确定在一个未掩蔽的条件下与目标音隔离，并在两个后向掩蔽的条件下与非目标掩蔽音后20至240毫秒的目标。一个掩蔽条件包括掩蔽频率的不相关变异性，但另一个没有。无变异性条件下产生更多的掩盖在老年人比年轻的成年人。掩蔽物变异性在两组中均诱导FDT大幅升高;然而，年轻人的FDT随训练的改善较大，而老年人的FDT改善极小。
Age effects on the ability to ignore irrelevant auditory information were studied using frequency discrimination threshold (FDT) tasks. FDTs were determined in an unmasked condition with target tones in isolation, and in two backward-masked conditions with a nontarget masking tone presented 20 to 240 ms after the target. One masked condition included irrelevant variability in the masker frequency, but the other did not. The no-variability condition yielded more masking in older than in young adults. Masker variability induced large FDT elevations in both groups; however, the improvement in FDTs with training was large in young but only minimal in older adults.