Impaired holistic coding of facial expression and facial identity in congenital prosopagnosia.

Impaired holistic coding of facial expression and facial identity in congenital prosopagnosia.
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DOI:
10.1016/j.neuropsychologia.2011.02.021
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发表时间:
2011-04
期刊:
影响因子:
2.6
通讯作者:
Calder AJ
Calder AJ
中科院分区:
心理学3区
文献类型:
--
作者:
Palermo R;Willis ML;Rivolta D;McKone E;Wilson CE;Calder AJ

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►先天性面孔失认症表现出对表达和身份的整体编码较弱。►正常表情识别可能是补偿策略的结果。►表达和身份的整体编码可能有一个共同的阶段。►整体身份编码在功能上与人脸识别能力有关。我们测试了12名患有先天性面容失认症(CP)的人,他们复制了一个常见的模式,即在识别面部身份时表现出严重困难,同时对面部表情(包括基本表情和社交表情)进行正常识别。使用标准表达合成和同一性合成任务检验整体加工的强度。与年龄和性别匹配的对照组相比,群体分析表明,CPS在表达和身份信息方面表现出较弱的整体处理能力。提示:(A)正常的表情识别可以来自补偿策略(例如,过度依赖表情的非整体线索);(B)表情和身份信息的加工之间的分离可能发生在整体加工的共同阶段之后;以及(C)与最近的说法相反,身份的整体加工在功能上涉及面孔识别能力。
► Congenital prosopagnosics show weak holistic coding of expression and identity. ► Normal expression recognition can result from compensatory strategies. ► There may be a common stage of holistic coding for expression and identity. ► Holistic coding of identity is functionally involved in face identification ability. We test 12 individuals with congenital prosopagnosia (CP), who replicate a common pattern of showing severe difficulty in recognising facial identity in conjunction with normal recognition of facial expressions (both basic and ‘social’). Strength of holistic processing was examined using standard expression composite and identity composite tasks. Compared to age- and sex-matched controls, group analyses demonstrated that CPs showed weaker holistic processing, for both expression and identity information. Implications are (a) normal expression recognition in CP can derive from compensatory strategies (e.g., over-reliance on non-holistic cues to expression); (b) the split between processing of expression and identity information may take place after a common stage of holistic processing; and (c) contrary to a recent claim, holistic processing of identity is functionally involved in face identification ability.
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