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  2. Hypnagogia - Wikipedia

    en.wikipedia.org/wiki/Hypnagogia

    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.

  3. Middle-of-the-night insomnia - Wikipedia

    en.wikipedia.org/wiki/Middle-of-the-night_insomnia

    Sleep research conducted in the 1990s showed that such waking up during the night may be a natural sleep pattern, rather than a form of insomnia. [2] If interrupted sleep (called "biphasic sleeping" or " bimodal sleep ") is perceived as normal and not referred to as "insomnia", less distress is caused and a return to sleep usually occurs after ...

  4. Clouding of consciousness - Wikipedia

    en.wikipedia.org/wiki/Clouding_of_consciousness

    Barbara Schildkrout, a clinical instructor in psychiatry at the Harvard Medical School, described her subjective experience of clouding of consciousness, which she also called "mental fog", after taking a single dose of chlorpheniramine (an antihistamine for her allergy to cottonwood) on a cross-country road trip. She described feeling "out of ...

  5. Why do I wake up at 3 a.m. every night? - AOL

    www.aol.com/keep-waking-middle-night-could...

    Waking up in the middle of the night is common, but it could be a problem when you find yourself not going back to sleep right away. ... Why you might be waking up. Sleep architecture refers to ...

  6. This Nighttime Habit Could Be A Key Indicator Of Dementia ...

    www.aol.com/lifestyle/nighttime-habit-could-key...

    Try to go to bed and wake up at the same time each day, even on weekends. Try to exercise every day (but not close to bedtime) Get natural sunlight for at least 30 minutes day. Avoid nicotine and ...

  7. Doctors Say This Nighttime Behavior Can Be A Sign Of Dementia

    www.aol.com/doctors-nighttime-behavior-sign...

    Sundowning is often a symptom that happens after someone is diagnosed with dementia or a dementia-related disease, but it can also be an early sign of mental decline itself. “There are changes ...

  8. Sleep inertia - Wikipedia

    en.wikipedia.org/wiki/Sleep_inertia

    Then, after 15 minutes, the brain's anterior cortical regions receive normal daytime blood flow. This 15 minute time period corresponds to the sleep inertia period. [citation needed] Studies show that drinking alcoholic beverages in the evening causes physiological distress upon wake up. This phenomenon is known colloquially as a hangover. [10 ...

  9. Exploding head syndrome - Wikipedia

    en.wikipedia.org/wiki/Exploding_head_syndrome

    Individuals with exploding head syndrome hear or experience loud imagined noises as they are falling asleep or are waking up, have a strong, often frightened emotional reaction to the sound, and do not report significant pain; around 10% of people also experience visual disturbances like perceiving visual static, lightning, or flashes of light.