PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -They are often associated with sensations of tripping, falling through space, or electric shock. Vocalizations can be associated with hypnic jerks. On the PSG hypnic jerks are recorded during quiet wakefulness and stage N1, and they disappear during N3 and REM sleep.

Detailed explanation-2: -Stage 1, also called N1, is essentially when a person first falls asleep. This stage normally lasts just one to seven minutes. During N1 sleep, the body has not fully relaxed, though the body and brain activities start to slow with periods of brief movements.

Detailed explanation-3: -Hypnagogic jerks typically occur during stage 1 sleep. 2 This is the lightest stage of sleep that occurs immediately after falling asleep. It may be misinterpreted as wakefulness, leading to confusion about when sleep starts to occur.

Detailed explanation-4: -Sleep-related head jerk (SRHJ) is characterized by sudden myoclonic flexion or version of the head induced by neck muscle contraction, and occurs mainly during rapid eye movement (REM) sleep.

Detailed explanation-5: -Hypnic jerks – Hypnic jerks are a common example of simple sleep-related movements. They consist of a sudden, brief jerk of the whole body or one or more segments at sleep onset, often associated with the sense of falling.