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  2. Unihemispheric slow-wave sleep - Wikipedia

    en.wikipedia.org/wiki/Unihemispheric_slow-wave_sleep

    Unihemispheric slow-wave sleep seems to allow the simultaneous sleeping and surfacing to breathe of aquatic mammals including both dolphins and seals. [7] Bottlenose dolphins are one specific species of cetaceans that have been proven experimentally to use USWS in order to maintain both swimming patterns and the surfacing for air while sleeping.

  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. Slow-wave sleep - Wikipedia

    en.wikipedia.org/wiki/Slow-wave_sleep

    Slow-wave sleep is necessary for survival. Some animals, such as dolphins and birds, have the ability to sleep with only one hemisphere of the brain, leaving the other hemisphere awake to carry out normal functions and to remain alert. This kind of sleep is called unihemispheric slow-wave sleep, and is also partially observable in human beings ...

  5. Avian sleep - Wikipedia

    en.wikipedia.org/wiki/Avian_Sleep

    To adapt to predation, two common techniques have evolved: positioning oneself out of harm's way while sleeping, and sleeping more lightly (such as unihemispheric sleep). In birds, perch height is believed to play a significant role in sleep; lower perch height has been shown to reduce the number and length of REM sleep episodes in pigeons, and ...

  6. Cathemerality - Wikipedia

    en.wikipedia.org/wiki/Cathemerality

    The lion is a cathemeral felid. Cathemerality, sometimes called "metaturnality", is an organismal activity pattern of irregular intervals during the day or night in which food is acquired, socializing with other organisms occurs, and any other activities necessary for livelihood are undertaken. [1]

  7. Neuroscience of sleep - Wikipedia

    en.wikipedia.org/wiki/Neuroscience_of_sleep

    Among mammals, infants sleep the longest. [44] Human babies have 8 hours of REM sleep and 8 hours of NREM sleep on an average. The percentage of time spent on each mode of sleep varies greatly in the first few weeks of development and some studies have correlated this to the degree of precociality of the child. [45]

  8. How to drink less during the holidays: 5 expert tips to help ...

    www.aol.com/lifestyle/drink-less-during-holidays...

    By steering clear of alcohol on other days of the week, you have a little more wiggle room to indulge during a party (though, again, it's advisable to avoid overdoing it and/or falling into the ...

  9. Diurnality - Wikipedia

    en.wikipedia.org/wiki/Diurnality

    Humans are diurnal, and organize their work and business mainly in the day. [a] Diurnality is a form of plant and animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. The common adjective used for daytime activity is "diurnal". The timing of activity by an animal depends on a variety ...