Have you ever made eye contact with a robot? It can be a very strange experience. Scientists even have a name for the feeling: the "uncanny valley"
Now, researchers at the Istituto Italiano di Tccnologia (IIT) in Italy have found that it is more than just a feeling. They ran an experiment that showed how a robot's gaze (注视)can make people think they are socially interactive with a human being.
That experience can slow a person's ability to make decisions. The team asked 40 people to play a video game of "thicken". In the game, each player has to decide whether to allow a car to drive straight toward another car or to turn to avoid a crash. The people were playing against a human-like robot sitting across from them.
During breaks in the game, players had to look at the robot. Sometimes the robot would look back and other times it would look away. As the interactions happened, the scientists collected data on behavior and brain activity.
"Our results show that, actually, the human brain treats the robot gaze as a social signal, and that signal influences the way we're making decisions, on the way we use in the game and also on our reactions." Wykowska said.
The findings could be useful in helping to decide where and how human-like robots might be placed in the future.