Computer systems can detect tiny nuances in facial expressions that people miss.

Researchers at the University of California San Diego and the University of Toronto have found that computers can detect the difference between real and fake pain more accurately than humans.

The study, titled “Automatic Decoding of Deceptive Pain Expressions” was published in Current Biology. Marian Bartlett, research professor at UC San Diego’s Institute for Neural Computation, was lead author of the study, and Kang Lee, professor at the Dr. Eric Jackman Institute of Child Study at the University of Toronto, was senior author.

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