Hamid is a 9-1-1 operator. When the blizzard began, he was told he would have to stay and work three extra shifts to cover for coworkers who were not able to drive to work through the storm. After 32 hours of exhausting work, he makes it home and discovers he is unable to fall asleep no matter how hard he tries. Hamid may be experiencing .
a. electroencephalography
b. k-complex stimulation
c. lucid dreaming
d. sleep rebound

ANSWER: SLEEP REBOUND

EXPLANATION: SLEEP or REM (rapid eye movement) REBOUND refers to the lengthening and increasing frequency and depth of rapid eye movement (REM) sleep, which is elicited by long periods of sleep deprivation.

However, sleep deprivation, which also known referred to as sleeplessness or insufficient sleep, is the condition of not having adequate sleep. It can be either chronic or acute and may be diverse in severity.

One of the major effects of sleep deprivation is the increment in the time needed to fall asleep (sleep latency) and the ability to stay asleep when sleep is fully initiated, which can be measured by polysomnography (PSG).

D.

Explanation:

This is a sleep disorder which is  characterised with elongation or extension of  dept of  Rapid Eye moments (REM) stage above  normal levels.

It is caused by sleep deprivation or  withdrawal from the   abuse of substances which suppresses REM-stage(alcohol, cocaine etc.),

In such individual it is as if they incurred  debts of REM sleep,when they were could not sleep. which they must pay back, thus the brain keep the debt (of REM sleep) for them.

Therefore  when they get opportunity to sleep,  such individuals  spend more  time at the REM stage  than usual trying to pay the debt back(-know as sleep rebound.)  This accounts for Hamid inability to sleep because the REM stage is characterised with active brain wave activities close to wakefulness.