获得性阅读障碍的“主要系统”假说

认知神经心理学为阅读机制的探讨提供了大量的证据，认为不同阅读障碍是不同加工通道选择性受损的结果。近年来，基于联结主义的三角模型理论，研究者提出了主要系统假说（primary system hypothesis），认为阅读障碍是主要的认知系统（如视觉、语义和语音系统）受损导致的：表层障碍是因为语义系统受损导致的阅读困难，语音和深层障碍是语音和语义系统同时受损时综合症状的连续体。该理论认为各主要系统可能同时是多个认知活动的加工成分，一个系统的受损会影响所有与之相关的认知过程，从而把阅读障碍与其它认知功能障碍联系起来。统一的主要系统受损下对各种获得性阅读障碍形成机制在文中得到详细的解释

Connectionist Acquired Dyslexia: A Review of Primary System Hypothesis

Cognitive neuropsychology explained the mechanism of acquired dyslexia as selective impairment for task specific procedures, such as grapheme-phoneme translation route for non-word reading. Recently, in the framework of connectionist triangle model of reading, "Primary System" hypothesis explained the acquired dyslexia as the impairment in different primary system (e.g., visual, phonology and semantics). Both the reading and non-reading task was influenced by the deficit in these primary systems. This approach suggested a new mechanism of all kinds of acquired dyslexia, as well as the relationship between dyslexia and other cognitive functional deficits. This paper elaborated it in the detail.