Department of Neurobiology, Duke University Medical Center, Durham, North Carolina, United States of America.|Department of Neurobiology, Duke University Medical Center, Durham, North Carolina, United States of America.|Department of Neurobiology, Duke University Medical Center, Durham, North Carolina, United States of America.|Department of Neurobiology, Duke University Medical Center, Durham, North Carolina, United States of America.|Department of Neurobiology, Duke University Medical Center, Durham, North Carolina, United States of America.