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Microsleep. A microsleep is a sudden temporary episode of sleep or drowsiness which may last for a few seconds where an individual fails to respond to some arbitrary sensory input and becomes unconscious. [1][2] Episodes of microsleep occur when an individual loses and regains awareness after a brief lapse in consciousness, often without ...
Phantom vibration syndrome or phantom ringing syndrome is the perception that one's mobile phone is vibrating or ringing when it is not. Other terms for this concept include ringxiety (a portmanteau of ring and anxiety), fauxcellarm (a portmanteau of "faux" /foʊ/ meaning "fake" or "false" and "cellphone" and "alarm" pronounced similarly to "false alarm") and phonetom (a portmanteau of phone ...
Frequency. ~10% of people [2] Exploding head syndrome (EHS) is an abnormal sensory perception during sleep in which a person experiences auditory hallucinations that are loud and of short duration when falling asleep or waking up. [2][4] The noise may be frightening, typically occurs only occasionally, and is not a serious health concern. [2 ...
Hypnic jerk. A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment. Hypnic jerks are one form of involuntary muscle ...
Treatment. Cognitive behavioral therapy, caffeine (to induce alertness), sleeping pills. Sleep deprivation, also known as sleep insufficiency[2] or sleeplessness, is the condition of not having adequate duration and/or quality of sleep to support decent alertness, performance, and health. It can be either chronic or acute and may vary widely in ...
The iPhone 14, 15 and 16 models are all capable of connecting to satellites, but iOS 18 is required to send text messages, according to Apple. To make sure your phone is updated, go to Settings ...
Bedtime procrastination. Artist's impression of a woman using her smartphone late at night. Bedtime procrastination is a psychological phenomenon that involves needlessly and voluntarily delaying going to bed, despite foreseeably being worse off as a result. [ 1 ] Bedtime procrastination can occur due to losing track of time, or as an attempt ...
A circadian rhythm (/ sərˈkeɪdiən /), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours. Circadian rhythms can refer to any process that originates within an organism (i.e., endogenous) and responds to the environment (is entrained by the environment). Circadian rhythms are regulated by a circadian clock whose ...