Condition with frequent incidents of sudden, involuntary deep sleep is what?

(Okay, why is this question in the World Lang section??) The sudden and involuntary sleeping condition is called narcolepsy. It's a psychological problem and is often mentioned along with sleep apnea, sleep terrors  and nightmares. Narcolepsy doesn't follow the normal chart for falling into REM sleep - through stage 1,2,3,4 and all - but rather it falls directly into REM.

The comma attempts to set apart an essential element.

1. душно 2. стало тепло 3. ещё холодно. 4. было темно. 5. было тепло