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In most animals, slow-wave sleep is characterized by high amplitude, low frequency EEG readings. This is also known as the desynchronized state of the brain, or deep sleep. In USWS, only one hemisphere exhibits the deep sleep EEG while the other hemisphere exhibits an EEG typical of wakefulness with a low amplitude and high frequency.
Like other marine mammals, seals sleep in water with half of their brain awake so that they can detect and escape from predators, as well as surface for air without fully waking. When they are asleep on land, both sides of their brain go into sleep mode.
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 ...
In the wild, mother seals only care for their pups for about four to six weeks before they are left to fend for themselves, but in that time, they learn a lot about seal behavior and especially ...
The little creatures that the platypuses eat emit electrical signals as their brains send signals to their muscles to contract. Every living thing, even algae, produces electrical activity.
Unlike most animals, whales are conscious breathers. All mammals sleep, but whales cannot afford to become unconscious for long because they may drown. They are believed to exhibit unihemispheric slow-wave sleep, in which they sleep with half of the brain while the other half remains active. This behaviour was only documented in toothed whales ...
According to a study published in May, it's likely because one hemisphere of the brain acts as a "night watch to monitor unfamiliar surroundings during sleep." SEE ALSO: Tim Cook just got shut ...
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