Machine opponent (IMAGE) University of Florida Caption A research participant plays against a ball-serving machine while his brain is imaged with an EEG cap. The research revealed that our brains respond differently when playing against human or machine opponents in sports. Credit Frazier Springfield Usage Restrictions None License Original 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.