Visual object processing in optic aphasia: a case of semantic access agnosia
Visual object processing in optic aphasia: a case of semantic access agnosia
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视神经失语症的视觉对象处理：语义访问失认症的一个案例
DOI：
10.1093/neucas/3.3.209-w
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发表时间：
1987
期刊：
影响因子：
0.8
通讯作者：
G. Humphreys
中科院分区：
文献类型：
--
作者：
M. Riddoch;G. Humphreys
摘要本文报告了一例视觉刺激命名障碍的病例。患者通常能够正确地对他不能命名的物体做出手势，并且他表现出完整的物体结构知识。进一步的检查显示，在访问对象的语义知识，这是最显着的障碍时，病人必须区分对象之间的视觉和语义相似。有人建议，病人的命名赤字是由于在访问语义信息的视觉障碍，以下完整的访问存储的结构知识。正确的姿势可能取决于对指定结构知识的系统的访问。数据被解释的视觉对象识别模型，其中访问语义信息，从系统指定的结构知识，举行级联操作。
Abstract A single case study is reported of a patient with a naming disorder specific to visually presented stimuli. The patient was often able to gesture correctly to objects he could not name, and he showed intact access to structural knowledge of objects. Further examination revealed an impairment in accessing semantic knowledge about objects, which was most marked when the patient had to discriminate between objects which were visually as well as semantically similar. It is suggested that the patient's naming deficit is due to an impairment in accessing semantic information from vision, following intact access to stored structural knowledge. Correct gestures may be contingent on access to the system specifying structural knowledge. The data are interpreted in terms of a model of visual object identification in which access to semantic information, from the system specifying structural knowledge, is held to operate in cascade.