PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -Night terrors are caused by over-arousal of the central nervous system (CNS) during sleep. Sleep happens in several stages. We have dreams-including nightmares-during the rapid eye movement (REM) stage. Night terrors happen during deep non-REM sleep.

Detailed explanation-2: -Night terrors can cause severe distress, followed by a state of panic and a sensation of helplessness. Most episodes last 45-90 minutes and are most common as the individual passes through stages 3 and 4 non-rapid eye movement sleep.

Detailed explanation-3: -Night terrors are like nightmares, except that nightmares usually occur during rapid eye movement (REM) sleep and are most common in the early morning. Night terrors usually happen in the first half of the night.

Detailed explanation-4: -Sleep terrors tend to occur within the first three hours of the major sleep episode, during arousal from stage three or four non-rapid eye movement (NREM) sleep.

Detailed explanation-5: -Nightmares usually occur during the stage of sleep known as rapid eye movement (REM) sleep. The exact cause of nightmares is not known. Nightmares can be triggered by many factors, including: Stress or anxiety.