The cortical organization of lexical knowledge: a dual lexicon model of spoken language processing.

The cortical organization of lexical knowledge: a dual lexicon model of spoken language processing.
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DOI:
10.1016/j.bandl.2012.03.005
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发表时间:
2012-06
期刊:
影响因子:
2.5
通讯作者:
Gow, David W., Jr.
Gow, David W., Jr.
中科院分区:
心理学3区
文献类型:
--
作者:
Gow, David W., Jr.

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目前的口语研究假设存在一个词汇库,在这个词汇库中,词汇形式被储存起来,并在口语感知、理解和产生过程中相互作用。尽管词形词典在理论上具有重要意义,但在更广泛的语言使用语境中,词汇的确切定位和功能还没有得到很好的理解。本文综述了失语症、功能影像学、神经解剖学、实验室音系学和行为学的证据,以证明平行词汇库的存在促进了背侧和腹侧语音通路的不同过程。背侧词汇位于顶叶下区,包括边缘上回,是语音和发音表征之间的接口。腹侧词汇位于颞后上沟和颞中回,是语音和语义表征之间的接口。除了它们的接口作用之外,这两个词典还有助于语音处理的鲁棒性。
Current accounts of spoken language assume the existence of a lexicon where wordforms are stored and interact during spoken language perception, understanding and production. Despite the theoretical importance of the wordform lexicon, the exact localization and function of the lexicon in the broader context of language use is not well understood. This review draws on evidence from aphasia, functional imaging, neuroanatomy, laboratory phonology and behavioral results to argue for the existence of parallel lexica that facilitate different processes in the dorsal and ventral speech pathways. The dorsal lexicon, localized in the inferior parietal region including the supramarginal gyrus, serves as an interface between phonetic and articulatory representations. The ventral lexicon, localized in the posterior superior temporal sulcus and middle temporal gyrus, serves as an interface between phonetic and semantic representations. In addition to their interface roles, the two lexica contribute to the robustness of speech processing.
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