The Neural Basis of Body Form and Body Action Agnosia
The Neural Basis of Body Form and Body Action Agnosia
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DOI：
10.1016/j.neuron.2008.09.022
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发表时间：
2008-10-23
期刊：
影响因子：
16.2
通讯作者：
Aglioti, Salvatore Maria
中科院分区：
文献类型：
--
作者：
Moro, Valentina;Urgesi, Cosimo;Aglioti, Salvatore Maria
对面部和非面部身体刺激的视觉分析会引起不同皮层区域的神经活动。此外，处理身体形式和身体动作依赖于不同的神经基质。虽然脑损伤的研究表明，具体的面部处理缺陷，神经心理学证据的缺陷识别的非面部身体部位是缺乏的。通过将心理物理学研究与病变映射技术相结合，我们发现腹内侧、枕颞区的病变引起面部和身体识别缺陷，而涉及纹外体区的病变似乎与身体识别受损有关，但与面部和物体刺激无关。我们还发现，身体形态和身体动作识别缺陷可以双重分离，并分别与纹外体区和腹侧前运动皮层的病变有因果关系。我们的研究报告了两种特定类别的视觉缺陷，称为身体形态和身体动作失认症，并强调了它们的神经基础。
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.