Although most adults are considered experts in face recognition, brain trauma can produce a selective loss in this ability, a condition referred to as prosopagnosia. This study examined the processing strategies of prosopagnosic patients LR and HH using the Face Dimensions Test. In this test, featural and configural information in the upper and lower halves of the face was parametrically varied and sensitivity to these changes measured. We found that relative to age-matched control participants, LR and HH exhibited an impaired ability to discriminate differences in the eye region, but a preserved ability to detect featural and configural differences in the mouth region. This pattern of impairment and sparing was demonstrated in tests of direct perception and immediate memory. The obtained findings demonstrate that prosopagnosia does not necessarily cause a global impairment to face perception, but a selective impairment to the perception of information in the upper half of the face.

中文翻译：

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保留2例围手术期患者的口部区域加工。

尽管大多数成年人被认为是面部识别方面的专家，但脑部创伤会导致这种能力的选择性丧失，这种情况被称为“更年期”。这项研究使用Face Dimensions Test检验了围绝经期患者LR和HH的处理策略。在该测试中，参数改变了脸部上半部分和下半部分的特征和形态信息，并测量了对这些变化的敏感性。我们发现相对于年龄匹配的对照参与者，LR和HH表现出辨别眼睛区域差异的能力受损，但是保留了检测嘴部区域的特征和形态差异的能力。在直接感知和即时记忆的测试中证明了这种损害和保留的模式。