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Nightmare disorder is a sleep disorder characterized by repeated intense nightmares that most often center on threats to physical safety and security. [2] The nightmares usually occur during the REM stage of sleep, and the person who experiences the nightmares typically remembers them well upon waking. [2]
The word hypnagogia is sometimes used in a restricted sense to refer to the onset of sleep, and contrasted with hypnopompia, Frederic Myers's term for waking up. [2] However, hypnagogia is also regularly employed in a more general sense that covers both falling asleep and waking up.
Difficulties sleeping (not being able to fall asleep/waking up very early and not being able fall back asleep again/waking up multiple times throughout the night) What should I do if anxiety is ...
While a full night of uninterrupted sleep is the goal for many, it’s not uncommon to wake up at least once in the middle of the night. In fact, most people wake up two to three times throughout ...
Sleep paralysis is a state, during waking up or falling asleep, in which a person is conscious but in a complete state of full-body paralysis. [1] [2] During an episode, the person may hallucinate (hear, feel, or see things that are not there), which often results in fear. [1] [3] Episodes generally last no more than a few minutes. [2]
Night time anxiety can cause you to wake up at an unusually early hour (say, 3 a.m.), feel like you haven’t had enough sleep, and then feel pressure to go back to sleep, explains Virginia Runko ...
As a consequence, it causes a jerk to wake the sleeper up so they can catch themselves. [11] A researcher at the University of Colorado suggested that a hypnic jerk could be "an archaic reflex to the brain's misinterpretation of muscle relaxation with the onset of sleep as a signal that a sleeping primate is falling out of a tree.
These have a two-fold effect: first, just as in R.E.M. sleep, these brain-stem fragments essentially activate the dream mechanism. Second, they catalyze a near-waking state. However, this is often not powerful enough to jar a person completely out of deep sleep, and so only the mind fully awakens, leaving the body trapped in the atonia of deep ...