The CISRE is housed in a state of the art 12,400 square foot facility on the Johns Hopkins Bayview Medical Center campus. The CISRE facilities are comprised of eight private inpatient rooms with personal full-size bathrooms and the capability of monitoring up to 10 subjects simultaneously. Bariatric beds with a weight capacity of up to 1000 lbs are available, if required. Each room has a voice-activated intercom system that allows continuous on-demand communication between subjects and the monitoring staff. High-quality infrared cameras with zooming capability are integrated within the polysomnographic recording. “Through-the wall” access allows intermittent venous blood sampling or drug administration during sleep without disturbing research subjects. In addition to standard PSG studies, a specialized chronobiology suite of five beds is available for specific protocols that require time, light and sound isolation.