0
Q
REM
A
The stages in the sleep cycle that includes increased brain activity, elevated hormone levels, and rapid eye movement , also is the stage of sleep associated with negative dreams
1
Q
Consciousness
A
A state of awareness
2
Q
NREM
A
The other stages in the sleep cycle in which patterns in brain activity are slow and there is no rapid eye movement
3
Q
Insomnia
A
A prolonged and usually abnormal inability to obtain adequate sleep
4
Q
Sleep apnea
A
Frequent interruptions of breathing during sleep
5
Q
Narcolepsy
A
Permanent and overwhelming feeling of sleepiness and fatigue
