Moss Rehabilitation Research Institute and Temple University School of Medicine, Philadelphia, USA.
Cogn Neuropsychol. 2001 Jun 1;18(4):289-306. doi: 10.1080/02643290126172.
Previous accounts of autotopagnosia (e.g., Ogden, 1985; Pick, 1908; Semenza, 1988) propose that the disorder is attributable to deficits in "mental images," visual body schema, or semantic representations. A recent account (Sirigu, Grafman, Bressler, & Sunderland, 1991b) posits deficits in visual structural descriptions of the human body and its parts, in the context of spared semantic and proprioceptivespatio-motor body representations, but provides no evidence bearing on the nature or format of the putatively damaged representation. We report data from a man with autotopagnosia consequent to lefthemisphere brain damage which bear directly on the nature of the representation impaired in the disorder. The subject, GL, is unable to localise body parts on himself or others, whether cued by verbal or visual input. In contrast, he uses body parts precisely in reaching and grasping tasks, correctly matches items of clothing to body parts, and localises the parts of animals and man-made objects without error. We also demonstrate that GL is unable to match pictured or real human body parts across shifts in orientation or changes in visual appearance, but can perform analogous matching tasks with animal body parts and man-made object parts. The data extend the account of Sirigu et al. (1991b) in suggesting that human body part localisation depends upon structural descriptions of human (but not animal) bodies that enable viewpoint-independent body part recognition and participate in the calculation of equivalence between the body parts of self and others across transformations in orientation.
先前对自体失认症的描述（例如，Ogden，1985；Pick，1908；Semenza，1988）表明，这种障碍归因于“心理意象”、视觉身体图式或语义表示的缺陷。最近的一种描述（Sirigu、Grafman、Bressler 和 Sunderland，1991b）假设，在语义和 proprioceptivespatio-motor 身体表示保留的情况下，对人体及其部位的视觉结构描述存在缺陷，但没有提供任何证据表明受损表示的性质或格式。我们报告了一名因左脑损伤而患有自体失认症的男性的数据，这些数据直接涉及该疾病中受损的表示性质。主题，GL，无法在自己或他人身上定位身体部位，无论是通过口头还是视觉输入提示。相比之下，他在伸手和抓握任务中精确地使用身体部位，正确地将衣物与身体部位匹配，并在没有错误的情况下定位动物和人造物体的部位。我们还证明，GL 无法在方向或视觉外观变化的情况下匹配图片或真实的人体部位，但可以执行类似的动物身体部位和人造物体部位的匹配任务。这些数据扩展了 Sirigu 等人的描述（1991b），表明人体部位定位取决于人体的结构描述（但不是动物），这些描述能够实现独立于视角的身体部位识别，并参与自我和他人身体部位在方向转换中的等价计算。
