为什么看外国演员会犯“脸盲症”？

Other racial groups 'look alike because of visual and neural processes' — study

• racial/ˈreɪʃl/ adj. 种族的，人种的
  搭配短语：the system of racial segregation
  近义词：ethnic
  ethnic 例句：The movie features lead actors of various ethnic origins.
  词义辨析
  ethnic, racial
  ethnic 和 racial 都可以表示“种族的”，ethnic 更侧重于文化习俗方面的不同，它不单指种族，还可以指民族。而 racial 更多指人的外在特征和样貌，最典型的特征莫过于肤色、或者是眼睛、头发的颜色。
• neural/ˈnʊrəl/ adj. 神经的；神经系统的
  英文释义：relating to nerves or the nervous system
  例句：Neural networks are applied in machine learning.
• perception/pərˈsepʃn/ n. 认识，观念，看法
  相关词汇：perceive（v.）
  perceive 例句：It was only meant to be a joke, but she perceived it as an insult.
  例句：There is no truth. There is only perception.
• be rooted in 深深扎根于；源于
  相关词汇： root（n. 树根，根基）
  近义词：have its roots in sth.
  近义词：stem from sth.
  例句：High crime rates are typically rooted in widespread unemployment and poverty.
• tell apart
  分辨；区分
  近义词：distinguish；differentiate
  例句：The twins look so much alike that I just can't tell them apart.
• back up
  证实；支持
• proceedings/prəˈsiːdɪŋz/ n. 事件；议项；会议记录
• spot/spɑːt/
  v. 看见，看出；注意到
• face-recognition/feɪs ˌrekəɡˈnɪʃn/
  n. 面部识别
  recognition 英文