Upon arrival, a technician will lead you to your room. Surface electrodes will be applied painlessly to your scalp, chin, legs, chest, and near your eyes with conductive paste. This will enable us to evaluate your stages of sleep and pertinent information regarding your sleep pattern and behavior. A sensor will be placed under your nose and belts will be placed around your chest to monitor your breathing. The setup process will take about 45 minutes. A technician will monitor your sleep from a room in close proximity to you where your sleep data is collected and stored on our sleep diagnostic computerized system. If apnea is detected you will be contacted to be scheduled for a CPAP titration trial or the technician will initiate CPAP trial only if ordered by your physician on the night of your study.