Noninvasive Tinnitus Treatment Turns Volume Down on Phantom Noises (3 of 7) (image) American Association for the Advancement of Science Share Print E-Mail Caption Scientists revealed the neurological causes of tinnitus (hearing sounds sound even in the absence of external noise) by studying guinea pigs. Credit David Martel and Christopher Chang Usage Restrictions Please cite the owner of the material when publishing. This material may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. Share Print E-Mail 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.