sleep terror
Quick Summary
A night terror, also known as a sleep terror, is a sudden awakening during slow-wave sleep, often accompanied by a shrill cry. Individuals experiencing a night terror appear dazed and terrified but typically do not remember the episode upon waking. These episodes are more common in children and usually occur during non-REM sleep, distinguishing them from nightmares which happen during REM sleep and are remembered. Nightmares are disturbing dreams that cause emotional distress, leading to awakening, while night terrors involve partial awakening with vocalizations and autonomic symptoms like sweating and rapid heart rate. Night terrors are generally forgotten and are considered a type of parasomnia, a sleep disorder.123
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
- sleepParasomnias
Sleep terrors (pavor nocturnus) typically are disorders of early childhood. When NREM sleep is suddenly interrupted, the child may scream and sit up in apparent terror and be incoherent and inconsolable. After a period of minutes, the child returns to sleep, often without ever having…
Read MoreSleep terrors (pavor nocturnus) typically are disorders of early childhood. When NREM sleep is suddenly interrupted, the child may scream and sit up in apparent terror and be incoherent and inconsolable. After a period of minutes, the child returns to sleep, often without ever having…
Read More - dreamDreamlike activities
Night terrors are characterized by abrupt awakening, sometimes with a scream; a sleeping child may sit up in bed, apparently terror-stricken, with wide-open eyes and often with frozen posturing that may last several minutes. Afterward there typically is no recollection of dreamlike experience. Night terrors…
Read MoreNight terrors are characterized by abrupt awakening, sometimes with a scream; a sleeping child may sit up in bed, apparently terror-stricken, with wide-open eyes and often with frozen posturing that may last several minutes. Afterward there typically is no recollection of dreamlike experience. Night terrors…
Read More