Processing own-age vs. other-age faces: neuro-behavioral correlates and effects of emotion.

Processing own-age vs. other-age faces: neuro-behavioral correlates and effects of emotion.
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DOI:
10.1016/j.neuroimage.2013.04.029
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发表时间:
2013-09
期刊:
影响因子:
5.7
通讯作者:
Fischer, Hakan
Fischer, Hakan
中科院分区:
医学1区
文献类型:
--
作者:
Ebner, Natalie C.;Johnson, Matthew R.;Rieckmann, Anna;Durbin, Kelly A.;Johnson, Marcia K.;Fischer, Hakan

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年龄构成了面部的显著特征,并标志着群体成员身份。有证据表明,与其他年龄的面孔相比,对自己年龄的面孔的注意力和记忆力更强。然而,很少有人知道自己的年龄与其他年龄的面孔加工差异的神经和行为机制。人们对面部表情对这种年龄效应的影响知之甚少。使用功能磁共振成像,本研究检查了年轻和老年人参与者识别中性,快乐和愤怒的年轻和老年人面孔的大脑活动。在面部表情方面,内侧前额叶皮层、杏仁核和(老年参与者)杏仁核对自己年龄的面部表情比对其他年龄的面部表情表现出更大的活跃性。这些自身年龄效应在腹内侧前额叶皮层和大脑皮层中对中性和快乐的面孔有效,但对愤怒的面孔无效。这个新奇而有趣的发现表明,在某些情况下,负面面部情绪的处理超越了面部年龄的影响。
Age constitutes a salient feature of a face and signals group membership. There is evidence of greater attention to and better memory for own-age than other-age faces. However, little is known about the neural and behavioral mechanisms underlying processing differences for own-age vs. other-age faces. Even less is known about the impact of emotion expressed in faces on such own-age effects. Using fMRI, the present study examined brain activity while young and older adult participants identified expressions of neutral, happy, and angry young and older faces. Across facial expressions, medial prefrontal cortex, insula, and (for older participants) amygdala showed greater activity to own-age than other-age faces. These own-age effects in ventral medial prefrontal cortex and insula held for neutral and happy faces, but not for angry faces. This novel and intriguing finding suggests that processing of negative facial emotions under some conditions overrides age-of-face effects.
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