Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH 03755.
Department of Psychology, Glendon College, Toronto, Ontario M4N 3M6, Canada.
eNeuro. 2018 Oct 4;5(5). doi: 10.1523/ENEURO.0054-18.2018. eCollection 2018 Sep-Oct.
The perception of gender and age of unfamiliar faces is reported to vary idiosyncratically across retinal locations such that, for example, the same androgynous face may appear to be male at one location but female at another. Here, we test spatial heterogeneity for the recognition of the of personally familiar faces in human participants. We found idiosyncratic biases that were stable within participants and that varied more across locations for low as compared to high familiar faces. These data suggest that like face gender and age, face identity is processed, in part, by independent populations of neurons monitoring restricted spatial regions and that the recognition responses vary for the same face across these different locations. Moreover, repeated and varied social interactions appear to lead to adjustments of these independent face recognition neurons so that the same familiar face is eventually more likely to elicit the same recognition response across widely separated visual field locations. We provide a mechanistic account of this reduced retinotopic bias based on computational simulations.
据报道，人们对面孔的性别和年龄的感知会因视网膜位置而异，例如，同一张中性面孔在一个位置可能看起来是男性，但在另一个位置可能看起来是女性。在这里，我们测试了人类参与者对面孔熟悉度的识别的空间异质性。我们发现了参与者内部稳定的特殊偏见，并且对于低熟悉度面孔，与高熟悉度面孔相比，这种偏见在位置之间的变化更大。这些数据表明，与面孔的性别和年龄一样，面孔身份的部分处理是由独立的神经元群体监测受限制的空间区域完成的，并且对于相同的面孔，这些不同的位置会产生不同的识别反应。此外，反复的、多样化的社会互动似乎会导致这些独立的面孔识别神经元的调整，从而使得相同的熟悉面孔最终更有可能在广泛分离的视野位置产生相同的识别反应。我们基于计算模拟提供了这种减少的视网膜偏向的机制解释。
