Age-related improvements in auditory backward and simultaneous masking in 6-to 10-year-old children
Age-related improvements in auditory backward and simultaneous masking in 6-to 10-year-old children
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DOI：
10.1044/jslhr.4306.1402
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发表时间：
2000-12-01
影响因子：
2.6
通讯作者：
Moore, DR
中科院分区：
文献类型：
--
作者：
Hartley, DEH;Wright, BA;Moore, DR
本研究采用同时掩蔽和后向掩蔽的方法研究了噪声对听觉频率和时间分辨力的影响。参与者是6至10岁的儿童和成人。在测量频率分辨率（带通噪声或频谱陷波噪声中出现的音调的检测阈值差异）时，6岁儿童的表现与成人一样好。然而，对于向后掩蔽任务，6岁儿童的阈值平均比成人高34分贝。负指数衰减函数拟合所有年龄段受试者的后向掩蔽数据表明，成人样的时间分辨率可能要到11岁左右才能达到。这些结果表明，通过掩蔽测量，频率分辨率在6岁时已经达到成人般的性能，而时间分辨率在10岁以上发展。六岁的儿童也接受了认知能力测试。随着IQ分数的增加，频率和时间分辨率都有所改善。
This study investigated the development of auditory frequency and temporal resolution using simultaneous and backward masking of a tone by a noise. The participants were 6- to 10-year-old children and adults. On the measure of frequency resolution (the difference in the detection threshold for a tone presented either in a bandpass noise or in a spectrally notched noise), 6-year-old children performed as well as adults. However, for the backward masking task, 6-year-olds had, on average, 34 dB higher thresholds than adults. A negative exponential decay function Fitted to the backward masking data for subjects of all ages indicated that adult-like temporal resolution may not be reached until about 11 years of age. These results show that, measured by masking, frequency resolution has reached adult-like performance by 6 years of age, whereas temporal resolution develops beyond 10 years of age. Six-year-old children were also assessed with tests of cognitive ability. Improvements in both frequency and temporal resolution were found with increasing IQ score.