FACE PERCEPTION AND WITHIN-CATEGORY DISCRIMINATION IN PROSOPAGNOSIA
FACE PERCEPTION AND WITHIN-CATEGORY DISCRIMINATION IN PROSOPAGNOSIA
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DOI：
10.1016/0028-3932(95)00002-k
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发表时间：
1995-06-01
期刊：
影响因子：
2.6
通讯作者：
KLEIN, KL
中科院分区：
文献类型：
--
作者：
FARAH, MJ;LEVINSON, KL;KLEIN, KL
脸盲症患者在面部识别方面受到损害，但在常见物体识别方面没有受到损害，或者损害相对较小。有人认为，这种分离只是由于与物体识别相比，人脸识别的难度更大，或者与物体识别相比，人脸识别中更需要区分单个类别的视觉上相似的成员。我们使用正常受试者在“旧/新”识别范式中的表现来测试这些假设，以确定面部和物体识别的真正相对难度，并要求正常受试者和面部失认受试者区分面部和非面部物体类别的视觉相似样本。在两个不同的实验中，面部失认患者对面部的表现不成比例地较差。这些结果否定了上述假设，并意味着面盲症是一种特殊形式的视觉识别的损害，这种视觉识别对于面部识别是必需的，而对于识别常见物体则不是必需的或不太必需的。
Prosopagnosics are impaired at face recognition, but unimpaired, or relatively less impaired, at common object recognition. It has been suggested that this dissociation results simply from the greater difficulty of face recognition compared to object recognition, or from the greater need to discriminate visually similar members of a single category in face recognition compared to object recognition. We tested these hypotheses using the performance of normal subjects in an 'old/new' recognition paradigm to establish the true relative difficulty of Face and object recognition, and required both normal subjects and a prosopagnosic subject to discriminate both faces and visually similar exemplars of nonface object categories, In two different experiments, the prosopagnosic patient performed disproportionately poorly with faces. These results disconfirm the hypotheses described above, and imply that prosopagnosia is an impairment of a specialized form of visual recognition that is necessary for face recognition and is not necessary, or less necessary, for the recognition of common objects.