Research progress on neural mechanism of orthographic processing in children with Chinese developmental dyslexia

Objective The possible mechanisms of developmental dyslexia mainly include the hypothesis of language framework and the hypothesis of non-verbal framework. The language framework assumes that people with developmental dyslexia may exhibit defects in phonetic awareness, rapid naming, phonetic memory, and orthographic processing. Studies of developmental dyslexia in Chinese have found that deficiencies in orthography may be an important cause of dyslexia, but there are diverse views and opinions regarding orthography processing. This article sorts out the research progress in behavioral and neuroimaging aspects of orthography studies, and provides references for further development of processing test materials and methods in the research of processing mechanism of developmental dyslexia orthography. 【摘要】 发展性阅读障碍可能的机制主要包括语言框架假设和非语言框架假设。语言框架假设发展性阅读障碍者可能 在语音意识、快速命名、语音记忆和正字法加工中表现出缺陷。汉语发展性阅读障碍的研究发现正字法缺陷可能是产生阅 读障碍的重要原因, 但关于正字法加工的研究观点并不统一。本文对正字法研究的行为学和神经影像学等方面的研究进 展进行梳理, 为进一步开展发展性阅读障碍正字法研究加工机制中的加工测试材料、研究方法等方面提供参考。