Yale University researchers say their study that used lasers to create remote-controlled fruit flies could lead to a better understanding of overeating and violence in humans.

　　Using the lasers to stimulate specific brain cells, researchers say they were able to make the flies jump, walk, flap their wings and fly. 　

　　Scientists say the study could ultimately help identify the cells associated with psychiatric disorders, overeating and aggressiveness.

　　Even headless flies took flight when researchers stimulated the correct neurons, according to the study, published in the April 7 issue of the journal Cell.