Auditory temporal processing deficits in children with reading disabilities
Auditory temporal processing deficits in children with reading disabilities
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DOI：
10.1002/dys.323
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发表时间：
2007-08-01
期刊：
影响因子：
2.2
通讯作者：
Sapir, Shimon
中科院分区：
文献类型：
--
作者：
Cohen-Mimran, Ravit;Sapir, Shimon
中枢听觉处理在阅读技能发展和阅读障碍中的作用尚不清楚。本研究的目的是检查患有特定阅读障碍（SRD）的个体在处理快速呈现的、连续有序的非言语听觉信号方面是否存在缺陷。为此，我们比较了 12 名患有 SRD 的儿童和 12 名没有 SRD 的儿童，当这些信号以短（50 毫秒）与长（500 毫秒）刺激间隔 (ISI) 成对出现（相同或不同的音调，随机排序）时，他们检测 1000 和 2000 Hz 纯音的差异和相似之处的能力。结果显示，患有 SRD 的儿童在区分短 ISI 的纯音方面存在显着困难，但长 ISI 则不然，而对照组则在短 ISI 和长 ISI 下都表现良好。两组在注意力（d2）和表现智商方面没有显着差异，并且这些指标与 ISI 表现之间没有显着相关性。当两组合并时，短 ISI 表现和语音意识测试结果之间存在显着相关性。这些发现支持 SRD 的特定快速听觉处理缺陷假说。对受试者内部表现变异性的检查表明，与对照组相比，SRD 组的儿童表现出随着任务时间的推移表现出的表现下降，但整体表现的变异性较高。这些发现强调了使用绩效时间序列分析的重要性。版权所有 (C) 2006 John Wiley & Sons, Ltd.
The role of central auditory processing in reading skill development and reading disorders is unclear. The purpose of this study was to examine whether individuals with specific reading disabilities (SRD) have deficits in processing rapidly presented, serially ordered non-speech auditory signals. To this end, we compared 12 children with SRD and 12 children without SRD on their ability to detect differences and similarities in pure tones of 1000 and 2000 Hz when these signals were presented in pairs (same or different tones, randomly ordered) with short (50 ms) versus long (500 ms) inter stimulous intervals (ISI). Results showed that the children with SRD had significant difficulty in discriminating between pure tones with short, but not long ISI, whereas the controls performed well with both short and long ISI. The two groups did not differ significantly on measures of attention (d2) and performance IQ, and there were no significant correlations between these measures and ISI performance. There were significant correlations between the short ISI performance and phonologic awareness test results when the two groups were combined. These findings support the specific rapid auditory processing deficit hypothesis of SRD. Examination of intra-subject variability in performance indicated that children from the SRD group showed both decrement in performance with time on task and high overall variability in performance as compared to the controls. These findings underpin the importance of using time-series analyses of performance. Copyright (C) 2006 John Wiley & Sons, Ltd.