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Sleep disorders including sleep apnea have become an important health issue in the United States. Twenty-two million Americans have been estimated to have sleep apnea, with 80% of moderate and severe OSA cases undiagnosed. [117] OSA can occur at any age, but it happens more frequently in men who are over 40 and overweight. [117]
Hori et al. regard sleep onset hypnagogia as a state distinct from both wakefulness and sleep with unique electrophysiological, behavioral and subjective characteristics, [10] [12] while Germaine et al. have demonstrated a resemblance between the EEG power spectra of spontaneously occurring hypnagogic images, on the one hand, and those of both ...
A dream dictionary (also known as oneirocritic literature) is a tool made for interpreting images in a dream. Dream dictionaries tend to include specific images which are attached to specific interpretations. However, dream dictionaries are generally not considered scientifically viable by those within the psychology community.
Hypnopompia (also known as hypnopompic state) is the state of consciousness leading out of sleep, a term coined by the psychical researcher Frederic Myers. Its mirror is the hypnagogic state at sleep onset; though often conflated, the two states are not identical and have a different phenomenological character.
Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder and is characterized by recurrent episodes of complete or partial obstruction of the upper airway leading to reduced or absent breathing during sleep.
Sleep apnea, obstructive sleep apnea, obstruction of the airway during sleep, causing lack of sufficient deep sleep, often accompanied by snoring. Other forms of sleep apnea are less common. [ 89 ] Obstructive sleep apnea (OSA) is a medical disorder that is caused by repetitive collapse of the upper airway (back of the throat) during sleep.
In potentially harmful or disturbing cases a specialist in sleep disorders should be approached. [22] Video polysomnographic documentation is necessary only in REM sleep behavior disorder (RBD), since it is an essential diagnostic criteria in the ICSD to demonstrate the absence of muscle atonia and to exclude comorbid sleep disorders.
Dreams are the GUARDIANS of sleep and not its disturbers." [42] Grandmother and Granddaughter Dream (1839 or 1840). Taras Shevchenko. A turning point in theorizing about dream function came in 1953, when Science published the Aserinsky and Kleitman paper [43] establishing REM sleep as a distinct phase of sleep and linking dreams to REM sleep. [44]