Sheep Can Recognize Human Faces
University of Cambridge scientists have trained sheep to recognize the faces of famous people.
The scientists hope facial recognition may help with their understanding of neurodegenerative diseases.
The researchers showed the sheep pictures of people on two computer screens. One screen had an unknown person and the other had one of four famous people.
The animals were given food for choosing the photograph of the famous person. They chose the correct photograph by breaking an infrared beam near the flat surface showing the photo.
If they chose the wrong image, an electric signaling device would make a sound, and the sheep would receive no treat.
The sheep eventually were able to identify the famous face eight times out of every ten tries.
The group of famous personalities included actors Emma Watson and Jake Gyllenhaal, and former American president Barack Obama.
Professor Jenny Morton was the leader of the study. "We've shown that sheep have advanced face-recognition abilities, comparable with those of humans and monkeys," she noted.
The sheep were less successful when presented with the faces at a new angle or from a different direction. However, the researchers said the performance of the animals on this test was similar to the levels seen when humans took the test.
Scientists aim to use the sheep as models to study disorders of the brain, such as Huntington's disease. This disorder develops over a long period of time and affects the brain's ability to work.
I'm John Russell.
1.computer screen 电脑屏幕
We can study at home by watching educators on TV or on a computer screen.
2.a long period of time 长期的
The inscription of the monument has worn away over a long period of time.
3.make a sound 发出声音
Liza was so frightened she couldn't make a sound.
4.facial recognition 面部识别
Facial recognition programs are used in police and security operations.
5."We've shown that sheep have advanced face-recognition abilities, comparable with those of humans and monkeys," she noted.
compare with 与...相比
My English cannot compare with his.
The flowers here do not compare with those at home.
6.Scientists aim to use the sheep as models to study disorders of the brain, such as Huntington's disease.
aim to 计划；打算
They aim to clear every dealer from the street.
We aim to increase sales by 10 percent.
研究人员利用两个电脑屏幕向绵羊展示了人脸照片 。其中一位是普通人，另一边是四位名人中的一位 。
只要绵羊选对了名人的照片，就可以得到食物 。它们可以通过感应屏幕上显示的红外光束来选择名人的照片 。
教授珍妮·莫顿（Jenny Morton）主导了此次研究 。她指出，“实验表明，绵羊高级的人脸识别能力能够与人类和灵长类相提并论！”
而当这些人脸以不同的视角呈现时，绵羊识别的准确率会下降 。然而，研究人员表示，在这次实验中，绵羊的表现与人类测试时的水平相当 。
科学家旨在以绵羊为模型来研究脑紊乱疾病，如享廷顿病 。该病患病时间长且会影响大脑的认知能力 。