The amygdala and FFA track both social and non-social face dimensions
The amygdala and FFA track both social and non-social face dimensions
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DOI：
10.1016/j.neuropsychologia.2010.08.009
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发表时间：
2010-10-01
期刊：
影响因子：
2.6
通讯作者：
Todorov, Alexander
中科院分区：
文献类型：
--
作者：
Said, Christopher P.;Dotsch, Ron;Todorov, Alexander
杏仁核被认为执行许多社会功能，并因其在处理面孔社会属性中的作用而受到广泛关注。特别是，它已被证明对面部表情的反应比对中性面孔的反应更大，对正配价和负配价面孔的反应比在连续体中间的面孔的反应更大。面孔空间是一个向量空间，其中每个面孔都可以表示为空间中的一个点。空间的原点表示平均面孔。在这种情况下，正价面孔和负价面孔比连续体中间的面孔更远离平均面孔。因此，尚不清楚杏仁核对正价面孔和负价面孔的反应是由于其社会属性还是由于其在这里，我们比较了杏仁核对一组面孔的反应，这些面孔沿沿着两个维度变化，以平均面孔为中心，但在社会内容上不同。在杏仁核和大部分后部面孔网络中，我们观察到对两个维度的反应相似，对极端维度的反应比对接近平均面孔的面孔的反应更强。这些地区的社会相关的面孔可能部分是由于一般距离的平均脸（C）2010爱思唯尔有限公司版权所有
The amygdala is thought to perform a number of social functions and has received much attention for its role in processing social properties of faces In particular it has been shown to respond more to facial expressions than to neutral faces and more to positively valenced and negatively valenced faces than faces in the middle of the continuum However when these findings are viewed in the context of a multidimensional face space an important question emerges Face space is a vector space where every face can be represented as a point in the space The origin of the space represents the average face In this context positively valenced and negatively valenced faces are further away from the average face than faces in the middle of the continuum It is therefore unclear if the amygdala response to positively valenced and negatively valenced faces is due to their social properties or to their general distance from the average face Here we compared the amygdala response to a set of faces that varied along two dimensions centered around the average face but differing in social content In both the amygdala and much of the posterior face network we observed a similar response to both dimensions with stronger responses to the extremes of the dimensions than to faces near the average face These findings suggest that the responses in these regions to socially relevant faces may be partially due to general distance from the average face (C) 2010 Elsevier Ltd All rights reserved