患有发育性语言障碍儿童未受影响的兄弟姐妹的视听语言感知缺陷
Natalya Kaganovich1, Rhiana Ragheb2, Sharon Christ3
1Department of Speech, Language, and Hearing Sciences, Purdue University, 715 Clinic Drive, West Lafayette, IN 47907-2038, United States; Department of Psychological Sciences, Purdue University, 703 Third Street, West Lafayette, IN 47907-2038, United States.
Brain and language
|February 15, 2025
概括
发育性语言障碍 (DLD) 儿童的兄弟姐妹表现出异常的视听处理,类似于他们的受影响的兄弟姐妹. 他们的语言技能缺乏关键的视听细节,影响发展.
科学领域:
- 心理语言学 心理语言学
- 发展心理学 发展心理学
- 神经科学是一个神经科学.
背景情况:
- 发育性语言障碍 (DLD) 儿童的兄弟姐妹通常表现出比典型发育 (TD) 同龄人更弱的语言技能.
- DLD对兄弟姐妹语言相关的视听处理的影响在很大程度上仍未被探索.
研究的目的:
- 调查DLD儿童的兄弟姐妹在语音处理过程中是否使用视听信息 (口腔形状).
- 评估兄弟姐妹整合听觉和视觉语音信息的能力,以识别单词.
主要方法:
- 研究1:使用不匹配负面性 (MMN) 响应对兄弟姐妹和TD儿童的视听违规行为进行了视听声学处理的检查.
- 研究2:在DLD儿童,兄弟姐妹和TD儿童中,评估了视听文字对表达式匹配的准确性.
- 使用脑电图 (EEG) 来测量神经反应 (MMN,N400).
主要成果:
- 典型发育 (TD) 儿童表现出显著的MMN对视听声学违规,与DLD儿童和兄弟姐妹不同.
- 与TD儿童相比,兄弟姐妹和DLD儿童在检测视听文字不匹配时的准确性降低了.
- 与DLD儿童相比,TD儿童的N400振幅显著更大,与兄弟姐妹相比略大.
结论:
- 在DLD儿童的兄弟姐妹中,视听语言处理异常,反映了DLD儿童的缺陷.
- 兄弟姐妹的语音和词汇表达可能缺乏必要的视听细节,这可能会导致他们的语言困难.
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