Neuron's Function Revealed (VIDEO) DOE/Lawrence Berkeley National Laboratory This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption A larval zebrafish flicks its tail in a swimming motion after it is exposed to ultraviolet light. Using light-activated proteins, scientists for the first time zeroed in on the poorly understood neuron that controls this response. Credit Credit: Isacoff lab Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.