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首页> 外文期刊>Neuropsychologia >Perceptual and anatomic patterns of selective deficits in facial identity and expression processing.
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Perceptual and anatomic patterns of selective deficits in facial identity and expression processing.

机译：面部身份和表达过程中选择性缺陷的知觉和解剖学模式。

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摘要

Whether a single perceptual process or separate and possibly independent processes support facial identity and expression recognition is unclear. We used a morphed-face discrimination test to examine sensitivity to facial expression and identity information in patients with occipital or temporal lobe damage, and structural and functional MRI to correlate behavioral deficits with damage to the core regions of the face-processing network. We found selective impairments of identity perception in two patients with right inferotemporal lesions and two prosopagnosic patients with damage limited to the anterior temporal lobes. Of these four patients one exhibited damage to the right fusiform and occipital face areas, while the remaining three showed sparing of these regions. Thus impaired identity perception can occur with damage not only to the fusiform and occipital face areas, but also to other medial occipitotemporal structures that likely form part of a face recognition network. Impaired expression perception was seen in the fifth patient with damage affecting the face-related portion of the posterior superior temporal sulcus. This subject also had difficulty in discriminating identity when irrelevant variations in expression needed to be discounted. These neuropsychological and neuroimaging data provide evidence to complement models which address the separation of expression and identity perception within the face-processing network.
机译：目前尚不清楚单个感知过程还是单独且可能独立的过程是否支持面部识别和表情识别。我们使用变脸识别测试来检查枕叶或颞叶损伤患者对面部表情和身份信息的敏感性，并使用结构和功能MRI将行为缺陷与面部处理网络核心区域的损伤相关联。我们发现两名右下颞部病变患者和两名围绝经期患者（仅限于颞叶前叶）的身份知觉选择性受损。在这四位患者中，一位对右梭形和枕面部区域受损，而其余三位在这些区域保留。因此，受损的身份感知不仅会发生在梭形和枕面部区域，而且还会破坏其他可能构成面部识别网络一部分的枕骨内侧颞结构。在第五位患者中发现表达感知受损，受损影响到后颞颞沟的面部相关部分。当需要忽略无关的表达变化时，该受试者也难以区分身份。这些神经心理学和神经影像学数据为补充模型提供了证据，这些模型解决了面部处理网络中表情和身份感知的分离。

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