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首页> 外文期刊>Neuron >The neural basis of body form and body action agnosia.
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The neural basis of body form and body action agnosia.

机译:身体形态和身体动作不可知的神经基础。

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摘要

Visual analysis of faces and nonfacial body stimuli brings about neural activity in different cortical areas. Moreover, processing body form and body action relies on distinct neural substrates. Although brain lesion studies show specific face processing deficits, neuropsychological evidence for defective recognition of nonfacial body parts is lacking. By combining psychophysics studies with lesion-mapping techniques, we found that lesions of ventromedial, occipitotemporal areas induce face and body recognition deficits while lesions involving extrastriate body area seem causatively associated with impaired recognition of body but not of face and object stimuli. We also found that body form and body action recognition deficits can be double dissociated and are causatively associated with lesions to extrastriate body area and ventral premotor cortex, respectively. Our study reports two category-specific visual deficits, called body form and body action agnosia, and highlights their neural underpinnings.
机译:面部和非面部身体刺激的视觉分析可导致不同皮质区域的神经活动。而且,加工身体形态和身体动作依赖于不同的神经底物。尽管脑部病变研究显示出特定的面部加工缺陷,但缺乏非面部身体部位识别缺陷的神经心理学证据。通过将心理物理学研究与病变映射技术相结合,我们发现腹侧,枕颞区域的病变会诱发面部和身体的识别缺陷,而涉及到超体的身体区域的病变似乎与受损的身体识别相关,而与面部和物体的刺激无关。我们还发现,身体形态和身体动作识别缺陷可能是双重解离的,并且分别与病灶相关,以过度提炼身体区域和腹侧运动前皮层。我们的研究报告了两种特定类别的视力缺陷,分别称为身体形态和身体动作失常,并强调了它们的神经基础。

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