阅读训练对汉语阅读障碍儿童事件相关电位的影响

Effects of reading ability treatment on event related potential in children with developmental dyslexia of Chinese

【目的】比较阅读技能训练对汉语发展性阅读障碍儿童治疗前后听觉事件相关电位的影响。【方法】选择小学3～5年级汉语发展性阅读障碍学生60名,按抽签法随机分成训练组和对照组,训练组由经过培训的训练师对其进行为期7周的阅读技能训练。对照组进行常规治疗,不进行特殊阅读技能训练。训练前后进行听觉事件相关电位检测,对事件相关电位P3波进行比较。并对训练前后患儿的语文成绩、阅读成绩和阅读出错率进行比较。【结果】汉语发展性阅读障碍患儿训练后,其P3波潜伏期较训练前缩短,波幅增高(t=4.647,t=-4.309,P均<0.01),患儿的训练前后语文成绩,阅读成绩及阅读出错率间差异均有统计学意义(P<0.01)。对照组前后两次P3波潜伏期及波幅间差异无统计学意义(P>0.05)。【结论】阅读技能训练能够有效的改善阅读障碍患儿的听觉认知加工能力,提高其阅读水平。

[Objective] To investigate the effect of reading ability treatment on event related potential （ERP） in children with developmental dyslexia of Chinese. [Methods] Totally 60 pupils with developmental dyslexia of Chinese, from three to five in grades were enrolled. The patients divided into 2 groups randomly： Training Group and Control Group. The training groups were trained with systematically treatment for consecutive 7 weeks. The control groups were treated with normal treatment methods. The latency and amplitude of P3 ERP, the marks of language examination, marks of reading examination and reading error rates were compared. [Results] The latency and amplitude in Chinese developmental dyslexia group after treatment were significantly shorter and higher than before treatment（t=4. 647, -4. 309,P〈0.01）. There were remarkable differences in mark of language examination, mark of reading examination and reading error rate before and after reading ability treatment（P〈0.01）. The changes between P3 ERP in control group had no sense in statistics（P〉0.05）. [Conclusion] The reading ability treatment can improve the auditory cognitive process ability and raise the reading levels.