Brain Connections (IMAGE) University of Southern California Caption USC scientists are beginning to crack the brain's genetic code -- discovering how variations in our DNA affect the structure of our brains and our risk for brain disorders such as Parkinson's disease. Credit Paul Thompson/ENIGMA Center, USC Usage Restrictions Please use credit and caption. License Licensed 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.