Sleep Disorders (IMAGE) UT Southwestern Medical Center Caption Neuroscientists Dr. Rolf Joho (left) and Dr. Felipe Espinosa are studying a human disorder called sleep maintenance insomnia, in which sufferers can get to sleep, but don't remain at rest for long. Their findings in mice may help scientists better understand the disorder and provide an animal model for developing treatments. Credit UT Southwestern Medical Center Usage Restrictions Please use our credit line. 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.