The neurobiology of sign language and its implications for the neural basis of language
The neurobiology of sign language and its implications for the neural basis of language
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DOI：
10.1038/381699a0
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发表时间：
1996-06-20
期刊：
影响因子：
64.8
通讯作者：
Klima, ES
中科院分区：
文献类型：
--
作者：
Hickok, G;Bellugi, U;Klima, ES
大脑左半球在语言方面占主导地位，语言使用的许多方面受到左半球比右半球损伤的影响更大。然而，这种不对称的基础是一个有争议的问题;左半球可以专门用于处理语言信息（1-3）或用于语言所依赖的一些更一般的功能，例如处理快速变化的时间信息（4）或执行复杂的运动模式（5）。为了调查这些可能性，我们检查了23个手语使用者的语言能力与单侧脑损伤。尽管手语依赖于视觉空间而不是快速的时间信息，但同样的左半球优势也出现了。手语与非语言手势的产生的相关性分析表明，这些过程在很大程度上是独立的，我们的研究结果支持这样的观点，即左半球的语言优势是不能还原为更一般的感觉或运动过程。
THE left cerebral hemisphere is dominant for language, and many aspects of language use are more impaired by damage to the left than the right hemisphere, The basis for this asymmetry, however, is a matter of debate; the left hemisphere may be specialized for processing linguistic information(1-3) or for some more general function on which language depends, such as the processing of rapidly changing temporal information(4) or execution of complex motor patterns(5). To investigate these possibilities, we examined the linguistic abilities of 23 sign-language users with unilateral brain lesions. Despite the fact that sign language relies on visuospatial rather than rapid temporal information, the same left-hemispheric dominance emerged. Correlation analyses of the production of sign language versus non-linguistic hand gestures suggest that these processes are largely independent, Our findings support the view that the left-hemisphere dominance for language is not reducible solely to more general sensory or motor processes.