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Sleep psychology is a specialty that developed from the need to better understand and treat sleep and sleepârelated disorders. The specialty requires a broad understanding of: 1  Normal and disordered sleep. 2  Sleep physiology.3  The effects of sleep medications on the brain.4  Sleep cycles.5  Sleep changes related to age.leep psychology is a specialty that developed from the need to better understand and treat sleep and sleepârelated disorders. The specialty requires a broad understanding of: 1  Normal and disordered sleep. 2  Sleep physiology. 3  The effects of sleep medications on the brain. 4  Sleep cycles. 5  Sleep changes related to age.
REM sleep is sometimes referred to as paradoxical sleep by scientists because it is a period of sleep characterized by rapid periodic twitching movements of the eye muscles and other physiological changes, such as increased breathing and heart rate, increased brain activity, and muscle relaxation.asically: you look asleep, but your brain is wide awake. REM sleep is when we remember our dreams, so it makes sense that our brains are most active when we are dreaming, seeing as that dreams require a lot of mental activity. 14 people found this useful.