Norm-based face encoding by single neurons in the monkey inferotemporal cortex
Norm-based face encoding by single neurons in the monkey inferotemporal cortex
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DOI：
10.1038/nature04951
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发表时间：
2006-08-03
期刊：
影响因子：
64.8
通讯作者：
Giese, Martin A.
中科院分区：
文献类型：
--
作者：
Leopold, David A.;Bondar, Igor V.;Giese, Martin A.
对熟悉面孔的丰富和即时感知，包括其身份，表情甚至意图，是人类和非人类灵长类动物大脑最令人印象深刻的共同能力之一。猕猴下颞叶皮层中的许多视觉反应神经元选择性地对面孔做出反应（1-4），有时只对一个或几个个体做出反应（5-7），而对视网膜图像的比例和其他细节几乎不敏感（8，9）。在这里，我们表明，在猕猴前下颞叶皮层的面部反应神经元调谐到一个基本维度的面部知觉。使用之前为人类心理物理学开发的基于规范的漫画化框架（10-12），我们改变了真实感人脸中存在的身份信息（13），并发现前颞下皮质的神经元最常围绕平均值进行调整，身份模糊的脸。这些观察结果是一致的面部选择性反应，在这方面正在形成的图形比较，反映了传入的脸和内部参考或规范之间的结构差异。因此，这些发现将颞下皮层神经元的调谐与面部身份感知的心理模型联系起来。
The rich and immediate perception of a familiar face, including its identity, expression and even intent, is one of the most impressive shared faculties of human and non-human primate brains. Many visually responsive neurons in the inferotemporal cortex of macaque monkeys respond selectively to faces(1-4), sometimes to only one or a few individuals(5-7), while showing little sensitivity to scale and other details of the retinal image(8,9). Here we show that face-responsive neurons in the macaque monkey anterior inferotemporal cortex are tuned to a fundamental dimension of face perception. Using a norm-based caricaturization framework previously developed for human psychophysics(10-12), we varied the identity information present in photo-realistic human faces(13), and found that neurons of the anterior inferotemporal cortex were most often tuned around the average, identity-ambiguous face. These observations are consistent with face-selective responses in this area being shaped by a figural comparison, reflecting structural differences between an incoming face and an internal reference or norm. As such, these findings link the tuning of neurons in the inferotemporal cortex to psychological models of face identity perception.