Biologist Arthur Galston told "St. Petersburg Times", "We know plants don't have nervous systems. But they do have little electrical currents flowing through them and are subject to outside manipulation." He further said that plants can show altered electrical responses to light, chemical agents and disease but he "draws the line" to the claim of them "responding to human thoughts and events, including life elimination." Scientists at the Cornell University and the Science Unlimited Research Foundation, San Antonio, Texas, could not find results that supported Backster's findings in the experiment, where the death of brine shrimp caused electrical voltage changes in the leaves of a plant in another room. Backster explained that they did not follow the exact laboratory techniques which he had used to perform the original experiments and he has not attempted to repeat them himself.