A Blast of Light to the Brain Can Make Mice Mean

http://www.youtube.com/watch?v=I64X7vHSHOE&feature=player_embedded The burgeoning field of optogenetics—using shot of light on neurons to control behavior—has already produced some intruiging and peculiar results. Now add one more: Scientists can use it to make mice angry and aggressive. From DISCOVER blogger Ed Yong: