COMPONENTS IN THE VISUAL PROCESSING OF KNOWN AND UNKNOWN FACES
COMPONENTS IN THE VISUAL PROCESSING OF KNOWN AND UNKNOWN FACES
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DOI：
10.1080/01688639508405159
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发表时间：
1995-10-01
影响因子：
2.2
通讯作者：
CALTAGIRONE, C
中科院分区：
文献类型：
--
作者：
CARLESIMO, GA;CALTAGIRONE, C
本研究探讨了影响人脸视觉加工障碍的神经基础和认知机制。对2例面孔失认症（PA）患者、45例未被选为gnosic障碍的单侧脑损伤患者和52例正常人进行了三项任务，包括陌生面孔的视觉匹配、知名面孔的识别和未知面孔的年龄归类。结果证实，右半球（尤其是后半球）对面部处理的所有主要方面都至关重要。两例PA患者的神经放射学和PET检查均显示右侧大脑后动脉（颞叶和枕叶内侧内侧区域）的病变。此外，组间比较显示，右后侧病变患者在我们的电池的所有任务中得分最低。群体比较和个案分析都指出，对熟悉面孔的识别不足通常与知觉障碍无关，因此，应该被认为是本质上的失忆。相反，年龄归因障碍似乎与对陌生面孔的知觉分析缺陷密切相关。
This study investigated the neural basis and cognitive mechanisms of disorders affecting the visual processing of human faces. Two patients affected by prosopagnosia (PA), 45 unilateral brain-damaged patients not previously selected for gnosic disturbance, and 52 normal subjects were administered three tasks involving visual matching of unfamiliar faces, identification of famous faces, and age attribution to unknown faces. Results confirmed that the right hemisphere (and particularly the posterior region) is critical for all of the main aspects of facial processing. Neuroradiological and PET examination in both PA patients revealed a lesion in the territory of the right posterior cerebral artery (infero-mesial areas of temporal and occipital lobes). Moreover, group comparisons showed that patients affected by a right posterior lesion obtained the worst scores on all tasks of our battery. Both group comparisons and single-case analyses pointed out that a deficient recognition of familiar faces is generally independent of perceptual disorders and, as such, should be considered mnestic in nature. Disorders in the age attribution, on the contrary, appear to be strictly associated with deficits in the perceptual analysis of unfamiliar faces.