中文摘要：

言语产生和言语理解都涉及同音词在通达过程的表征。言语产生研究中，Levelt和Caramazza分别从通达的两阶段分离激活和独立网络模型推出了同音词的分享和独立表征模型，并用语言实验的频率效应和病人的语音治疗效应给予检验。本文评述了研究的新进展，探讨了同音词表征模型的分歧，认为同音词词汇表征与语言差异、加工范式、知觉通道等有关。从言语理解（言语知觉和词汇再认）的研究表明，这两种表征模型可能难以概括同音词尤其是汉语同音词的表征。本文根据言语理解研究的新近发现建议了一些可能的表征模型。

英文摘要：

Both speech production and comprehension involve the representation of homophones in lexical access. The shared representation model by Levelt and the independent representation model by Cararnazza for homophones were derived from the Two-Step Activation Model and Independent Network Model, respectively, in studies of speech production. These two models were tested with word frequency effect in language experiments and phonological treatments on patients. The article reviews the advance in related studies and explores the differences of the two models for homophone representation, suggesting that the representation of homophones has much to do with language difference, processing paradigms, perceptual modalities, and etc. From the studies on speech comprehension （speech perception and word recognition）, however, it shows that the two representation models for speech production have difficulties explaining the representation of homophones, especially of Chinese homophones. Suggestions are made for feasible models of homophone representations according to the findings of resent studies on speech comprehension.