Follow procedural protocols [such as PSG, Multiple Sleep Latency Test (MSLT), Maintenance of Wakefulness Test (MWT), parasomnia studies, PAP, and oxygen titration, home sleep studies, etc.] to ensure collection of appropriate data. Perform appropriate physiological calibrations to ensure proper signals and make required adjustments. Follow “lights out” procedures to establish and document baseline values (such as body position, oxyhemoglobin saturation, respiratory and heart rates, etc.) Perform data acquisition while monitoring study-tracing quality to ensure signals are artifact-free. Identify, correct, and document artifact. Document routine observations, including sleep stages and clinical events, changes in procedure, and other significant events to facilitate scoring and interpretation of polysomnographic results. Assist with appropriate interventions (including actions necessary for patient safety and therapeutic intervention such as positive airway pressure, oxygen administration, etc.). Follow “lights on” procedures to verify integrity of collected data and complete the data collection process (e.g., repeats the physiological and instrument calibrations and instructs the patient on completing questionnaires, and check for completeness, etc.). Demonstrate proficiency in recognizing sleep vs. wake and identify clinical events while monitoring sleep study patients. Demonstrate the knowledge and skills necessary to recognize and provide age specific care and treatment, assessment, and education of neonatal, pediatric, adolescent, adult, and geriatric patients. Demonstrate the knowledge and skills necessary to perform portable monitoring equipment preparation and data download. Perform patient education and instruction appropriate for out of center sleep testing. Demonstrate adherence to cleaning and disinfection procedures for portable monitoring devices. Demonstrate ability to identify artifact, inadequate signals, and study failures in portable monitoring.