I want to know the answer to the following question:
What conditions were suppressed in the 28 hour wake-sleep cycle studies ?
All the background I'm provided with is that "episodes are uncoupled from the endogenous circadian period of about 24.18 hours and researchers are allowed to assess the effects of circadian phase on aspects of sleep and wakefulness including sleep latency and other functions.[page needed]". Is that enough to answer the question?
Answer: no