Neural disorders of the linguistic use of space and movement.
Neural disorders of the linguistic use of space and movement.
复制标题
空间和运动的语言使用的神经障碍。
DOI：
10.1111/j.1749-6632.1993.tb22969.x
复制
发表时间：
1993
影响因子：
5.2
通讯作者：
Kegl,J
中科院分区：
文献类型：
--
作者：
Poizner,H;Kegl,J
Since sign languages utilize a transmission modality different from that of spoken languages, their study offers a unique opportunity for insight into the nature of neural mechanisms for language. We have been combining new techniques of three-dimensional computergraphic analysis of movement with linguistic analysis to illuminate neural mechanisms underlying signing from a striking new perspective: that of contrasting the processing deficits of signers with distinct language and movement disorders. Unilateral lesions in the left but not in the right cerebral hemisphere in Deaf signers produce sign language aphasias. These aphasias affect core grammatical components within a visual-gestural language despite the reliance of such components on the utilization of space. Thus, it would appear that the left cerebral hemisphere in man has an innate predisposition for language, independent of language modality. Our ability to create digital records of the spatiotemporal patterns of signing allows us to investigate signing not only as linguistic behavior, but also as motor behavior. In contrast to the representational-linguistic deficits of signers with aphasia, signers with Parkinson's disease show a unique set of signing alterations involving disturbed joint use, flattening of phonological distinctions, and timing disruptions. Analysis of patterns of breakdown of linguistic structure and motor control for sign language following brain damage in Deaf signers is allowing us to begin to map the neural substrate underlying the linguistic use of limb movement.
