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对于患有发育性阅读障碍的儿童而言,双耳时细结构敏感性

Sheila A Flanagan¹, Brian C J Moore², Angela M Wilson¹

¹Centre for Neuroscience in Education, Department of Psychology, University of Cambridge, United Kingdom.

Journal of speech, language, and hearing research : JSLHR

|April 24, 2025

概括

与正常发育的同龄人相比,患有发育性阅读障碍 (DYS) 的儿童表现出正常的双耳时细结构 (TFS) 处理. 这两组都表现出听力技能的长期发展,支持阅读障碍的时间采样 (TS) 理论.

科学领域:

听觉神经科学听觉神经科学
发展心理学发展心理学
语言学的语言学.

背景情况:

非典型的时间处理,特别是在语音任务中,是发育性阅读障碍症 (DYS) 的标志.
时间采样 (TS) 理论表明,低频信封调制的处理受损,但在患有DYS的儿童中保留了双耳时细结构 (TFS) 处理.

研究的目的:

在患有DYS的儿童中评估双耳TFS灵敏度.
为了比较患有DYS的儿童和年龄相匹配的典型发育 (TD) 儿童之间的TFS灵敏度.

主要方法:

双耳TFS灵敏度是使用两间隔强制选择任务来测量,评估区分耳间相差 (IPD) 的能力.
值频率 (区分IPD的最高频率) 适应性地确定了58名患有DYS的儿童 (年龄为7-9.6) 和30名年龄匹配的对照.
通过耳机呈现刺激.

主要成果:

区分180度IPD的TFS中位数值为DYS的886Hz,对照的999Hz.
区分30度IPD的TFS中位数值为DYS的388Hz,对照的442Hz.
在任何阶段,DYS和对照组之间都没有发现显著差异,尽管这两组的表现都比年轻成年人差得多,这表明长期发展.

结论:

双耳TFS敏感性在DYS儿童和TD儿童之间是可比的.
在这两组中,双耳TFS敏感性的发展是持久的.
这些发现支持阅读障碍的时间抽样 (TS) 理论.

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