کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6264387 1613987 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research ReportDistinct human face representations in the perirhinal cortex and fusiform gyrus
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Research ReportDistinct human face representations in the perirhinal cortex and fusiform gyrus
چکیده انگلیسی

Face representation, which is believed to be processed in the temporal visual pathway, has been extensively investigated in humans and monkeys through neuroimaging and electroneurophysiology. Lesion studies in monkeys indicate that simple facial features are processed in the caudal regions, and that the combined and integrated features of the face are stored in the perirhinal cortex (PRC). However, this hypothesis still lacks experimental evidence in normal human subjects; therefore, we conducted 2 functional magnetic resonance imaging experiments to investigate whether the function of the PRC differs from that of conventional face-related areas during face recognition tests. In experiment 1, normal subjects learned 6 facial identity-figure associations before scanning, and their brain activity was measured during recognition testing of correct and incorrect face-figure pairs in 3 different angles. The degree of activation in the PRC differed among the facial angles, and activation in response to frontal views was greater than that to other views. In experiment 2, where face angle, but not identity, was paired with an abstract figure, activation was significantly greater in response to the frontal view than that to other views. In contrast, the degree of activation in conventional face-related areas, i.e., the fusiform gyrus, did not differ among viewing angles in both experiments. The results indicate that the function of face representation in the PRC differs from that in the conventional face-related areas, and that a frontal view of the face plays a role in the activation of face representation stored in the PRC.

► Face representation stored in the temporal cortex was investigated by fMRI. ► Normal subjects learned face-figure pairs and were scanned during recognition test. ►Perirhinal cortex activation was greater to frontal face than to other views. ► Activation in conventional face-related areas did not differ among view angles. ► Perirhinal cortex plays a role in retrieving memories when exposed to frontal face.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1452, 3 May 2012, Pages 119-129
نویسندگان
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