Healthy Subject_All Channels_Gamma_img.png (IMAGE) University of Arizona Health Sciences Caption During an EEG, multiple sensors placed on a person’s skull send information to a machine that translates the brain’s electrical impulses into visual lines. Credit Courtesy of Tally Largent-Milnes and Matt Flowers, U of A College of Medicine – Tucson Department of Pharmacology Usage Restrictions For editorial use only with the story "Hearing the Invisible" 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.