Hand dominance for signing: clues to brain lateralization of language.
Hand dominance for signing: clues to brain lateralization of language.
复制标题
手语的手语优势：大脑语言偏侧化的线索。
DOI：
10.1016/0028-3932(89)90070-5
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发表时间：
1989
期刊：
影响因子：
2.6
通讯作者：
Poizner,H
中科院分区：
文献类型：
--
作者：
Vaid,J;Bellugi,U;Poizner,H
几乎所有的右撇子都是左半球主导语言。聋人的手语提供了一种不同寻常的工具来探索用手习惯和语言半球特化之间的联系，手本身就是语言的发音器。研究了美国手语（ASL）聋哑人的右手和左手的表现，以检测单手手势的快速产生和手势话语的阴影。在右撇子和左撇子中发现了相反的不对称模式。然而，左撇子在用他们不喜欢的手进行签名时比右撇子更灵活。此外，在左半球病变的聋哑人手语中发现了不寻常的手部使用模式，可能表明完整半球的调解增加。讨论了视觉-手势模式对语言大脑组织的影响。
Virtually all right-handed individuals are left hemisphere dominant for language. Sign languages of the deaf provide an unusual vehicle for exploring the link between handedness and hemispheric specialization for language the hands themselves are the language articulators. Performance of the right and left hand was examined in deaf native users of American Sign Language(ASL) for speeded production of one-handed signs and for shadowing of signed discourse. Opposite patterns of asymmetries in hand performance were found in right- and left- handers. However, left-handers were more flexible than right-handers in signing with their non- preferred hand. Furthermore, unusual patterns of hand use for sign were found in a deaf signer with a left hemisphere lesion, possibly indexing increased mediation of the intacthemisphere. Implications for brain organization of language in a visual—gestural mode are discussed.