Biotic Games -- The Gaming Setup (IMAGE) Stanford University Caption A small camera (white object with green circuit board on top), poised above the fluid chamber in the center of the black stand, transmits images of the paramecia as they swim about in response to changes in the polarity of an electrical field applied to the fluid chamber by the game player using a laptop computer. Credit L.A. Cicero, Stanford University News Service Usage Restrictions May not be altered or sold. 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.