Image (IMAGE) Mass General Brigham Caption Fiber bundles associated with symptom improvement following deep brain stimulation in Parkinson’s disease (green), dystonia (yellow), Tourette’s syndrome (blue),and obsessive-compulsive disorder (red). Courtesy of Barbara Hollunder. Credit Courtesy of Barbara Hollunder. 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.