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2. Sleep deprivation - Wikipedia

   en.wikipedia.org/wiki/Sleep_deprivation

   The negative effects of sleep deprivation on alertness and cognitive performance suggest decreases in brain activity and function. These changes primarily occur in two regions: the thalamus, a structure involved in alertness and attention, and the prefrontal cortex, a region subserving alertness, attention, and higher-order cognitive processes ...

3. Sleep in animals - Wikipedia

   en.wikipedia.org/wiki/Sleep_in_animals

   Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...

4. Rapid eye movement sleep - Wikipedia

   en.wikipedia.org/wiki/Rapid_eye_movement_sleep

   Injections of acetylcholinesterase inhibitor, which effectively increases available acetylcholine, have been found to induce paradoxical sleep in humans and other animals already in slow-wave sleep. Carbachol, which mimics the effect of acetylcholine on neurons, has a similar influence. In waking humans, the same injections produce paradoxical ...

5. Which Is More Important: Another Hour Of Sleep Or A ... - AOL

   www.aol.com/more-important-another-hour-sleep...

   Chronic sleep deprivation paired with regular physical activity can lead to fatigue, stress, and mood swings—undermining the benefits of both sleep and exercise. So, while exercise can help ...

6. Sleep hygiene: What it is and how to establish a better ... - AOL

   www.aol.com/lifestyle/sleep-hygiene-establish...

   Sleep is commonly referred to as the third pillar of health, yet research repeatedly shows that as many as one-third of Americans aren't getting enough of it. According to the American Academy of ...

7. Research Shows that Animals, too, Need a Good Night's Sleep - AOL

   www.aol.com/news/research-shows-animals-too-good...

   A lack of sleep is not only dangerous to the health of humans but it also puts the health of these animals at risk, no matter their shape, size or species. ... brain size and body mass are ...