Are these two graphs isomorphic? 
Definitions:
REM Rebound
The phenomenon where a person experiences more rapid eye movement (REM) sleep than usual following a period of REM sleep deprivation.
REM Sleep
Rapid Eye Movement sleep, a sleep stage where dreaming occurs and the brain is active, but the body is in a state of paralysis.
Learning Episodes
Specific instances or periods in which learning or acquisition of skills and knowledge occurs.
Consciousness
The state of being aware of and able to think about one's own existence, sensations, thoughts, surroundings, and experiences.
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