[ti:Sheep Can Recognize Human Faces] [by:www.51voa.com] [00:00.00]更多听力请访问51VOA.COM [00:01.80]University of Cambridge scientists have trained sheep [00:06.57]to recognize the faces of famous people. [00:11.00]The scientists hope facial recognition may help [00:14.95]with their understanding of neurodegenerative diseases. [00:20.16]The researchers showed the sheep pictures of people on two computer screens. [00:27.48]One screen had an unknown person and the other had one of four famous people. [00:35.24]The animals were given food for choosing the photograph of the famous person. [00:41.76]They chose the correct photograph by breaking an infrared beam [00:47.12]near the flat surface showing the photo. [00:51.20]If they chose the wrong image, [00:53.80]an electric signaling device would make a sound, [00:57.60]and the sheep would receive no treat. [01:01.04]The sheep eventually were able to identify the famous face [01:05.80]eight times out of every ten tries. [01:09.96]The group of famous personalities included actors Emma Watson [01:15.12]and Jake Gyllenhaal, and former American president Barack Obama. [01:21.04]Professor Jenny Morton was the leader of the study. [01:25.52]"We've shown that sheep have advanced face-recognition abilities, [01:30.56]comparable with those of humans and monkeys," she noted. [01:35.40]The sheep were less successful when presented [01:39.04]with the faces at a new angle or from a different direction. [01:44.84]However, the researchers said the performance of the animals on this test [01:51.12]was similar to the levels seen when humans took the test. [01:56.32]Scientists aim to use the sheep as models to study disorders of the brain, [02:02.80]such as Huntington's disease. [02:05.60]This disorder develops over a long period of time [02:09.88]and affects the brain's ability to work. [02:13.64]I'm John Russell. 更多听力请访问51VOA.COM