Cognitive neuropsychology has made greatcontributions to our understanding of the neural basisof language since Broca's seminal work; the primaryneural circuitries for language processing have beendocumented. Unfortunately, these achievements werealmost exclusively from studies on alphabetic languages.Recent behavioral and imaging studies suggest that theneural network involving processes of Chinese is notentirely identical to that in alphabetic languages.In thepresent study, reading performance in a dyslexic patient,whose native language is Chinese, was systematicallyexamined by a series of cognitive neuropsychologicalexperiments, and theoretical implications of this studywas discussed in comparisons with studies in dyslexicpatients who use alphabetic scripts.
LUO Ben-yanZHAO Xiao-yuWANG Yan-wenXU Ming-weiWENG Xu-chu
Many studies involving lexical access in picture-naming tasks have been undertaken at a point in time,mainly focusing on age of acquisition(AoA).To identify the real determinates of lexical access in recovery and their traces in the brain,we carried out a longitudinal study on a Chinese pure anomic patient using multiple logistic regression analysis.We found that AoA played an important role in early recovery but not in total recovery,whereas familiarity was significant in the whole process.From a new dynamic point of view,our results indicate that AoA and familiarity are the main determinants of lexical access in anomia recovery.We suggest that the changing effects of AoA during recovery may be related to the pathologic process;AoA and familiarity should be taken into account in constructing materials to assess and treat anomic patients.
命名障碍即词回忆困难或找词困难，见于多种器质性脑病，是失语症中最为常见的语言障碍。命名障碍机制的研究往往基于认知心理学的加工模式和神经解剖学，这些研究揭示了命名障碍中的词频、词汇习得年龄（words age of acquisition，AOA）等效应。AOA效应在国外是研究焦点，它的存在与否及机制的研究对命名障碍患者的病情评估和康复有很大帮助。为此，我们就命名障碍中AOA效应的最新研究成果作一综述。
