Apraxia and aphasia for a visual-gestural language.
Apraxia and aphasia for a visual-gestural language.
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视觉手势语言的失用症和失语症。
DOI：
10.1152/ajpregu.1984.246.6.r868
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
Iragui,V
中科院分区：
文献类型：
--
作者：
Poizner,H;Bellugi,U;Iragui,V
由于手语利用视觉-手势通道，他们的研究为深入了解语言和手势在大脑中的表现方式提供了独特的机会。在四名单侧脑损伤的聋人手语者（三名左半球，一名右半球）中，研究了手语失用症和失语症的可分离性。这些患者接受了各种失用症测试和哑剧识别测试。右半球受损的病人并不像我们预期的那样是无意识的。对于左半球受损的患者，他们都是手语失语症患者，他们的手语能力和非语言运动技能之间出现了强烈的分离。这些患者的语言缺陷似乎与手语的特定语言成分有关，而不是与潜在的运动障碍或表达和理解任何符号的能力障碍有关。这种语言功能和非语言功能之间的分离更加引人注目，因为手语和手势是以相同的形式传播的。
Since signed languages utilize visual-gestural channels, their study allows a unique opportunity for insight into the ways language and gesture may be represented in the brain. The separability of apraxia and aphasia for sign language was examined in four deaf signers who had unilateral brain damage, three to the left hemisphere and one to the right hemisphere. These patients were administered various tests for apraxia and a test of pantomime recognition. The patient with damage to the right hemisphere was not apraxic as we would expect. For the patients with damage to the left hemisphere, all of whom were aphasic for sign language, strong dissociations emerged between their capacities for sign language and their nonlinguistic motor skills. The language deficits of these patients seemed related to specific linguistic components of sign language rather than to an underlying motor disorder or an underlying disorder in the capacity to express and comprehend symbols of any kind. This separation between linguistic and nonlinguistic function is all the more striking, because sign language and gesture are transmitted in the same modality.