Evaluation of Circadian OS Technology on Melatonin Suppression

Aims: To test whether the Circadian OS app delivers sufficient circadian effective light that will result in measurable melatonin suppression (target suppression is 30% after 1 hour exposure) Hypothesis: The Circadian OS app will deliver a Circadian Stimulus (CS) of 0.3 at the eye level and will result in 30% melatonin suppression after one hour using the device compared to less than 10% suppression without the Circadian OS app and the subjects will feel less sleepy (KSS score) when exposed to the Circadian OS app compared to no app Outcomes: melatonin suppression will be calculated from saliva samples and subjective sleepiness as self-rated on the Karolinska Sleepiness Scale (KSS)