Clinical Research Directory

Inclusion Criteria: * Subject must have the ability to understand and provide written informed consent. * Subject is 18 to 90 years of age. * Subject must be willing and able to comply with study procedures and duration. * Male or female of any race. Exclusion Criteria: * Subject requires oxygen therapy or noninvasive ventilation. * Subject has a current diagnosis of chronic obstructive pulmonary disorder (COPD), neuromuscular disease, periodic limb movement, or narcolepsy. * Compromised circulation, injury, or physical malformation of fingers, toes, hands, ears or forehead/skull or other sensor sites which would limit the ability to test sites needed for the study. (Note: Certain malformations may still allow subjects to participate if the condition is noted and would not affect the particular sites utilized.) * Subject is on medication known to interfere with heart rate, such as beta blockers, digoxin, or calcium receptor agonists. * Subjects with severe contact allergies to standard adhesives, latex or other materials found in pulse oximetry sensors, ECG electrodes, respiration monitor electrodes or other medical sensors (self-reported). * Unwillingness or inability to remove colored nail polish from test digits. * Other known health condition, which should be considered.