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Fish do sleep, according to the criteria for behavioural sleep. [2] As fish are a hugely diverse taxon, with over 30,000 described species of fish, the sleep behaviours and characteristics differ between species. For a long time, researchers overlooked sleep behaviour in fish and other ecothermic taxa, [3] as the definition of sleep included ...
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 ...
Sleep and memory; Sleep and metabolism; Sleep and weight; Sleep diary; Sleep drunkenness; Sleep efficiency; Sleep epigenetics; Sleep hygiene; Sleep in fish; Sleep in space; Sleep induction; Sleep inertia; The Sleep of Reason Produces Monsters; Sleep onset latency; Sleep pod; The Sleep Solution; Sleep spindle; Sleep study; Sleep tracking; Sleep ...
Afrikaans; العربية; Aragonés; Asturianu; Azərbaycanca; Banjar; Башҡортса; Беларуская; Беларуская (тарашкевіца)
Theba pisana snails aestivating on Foeniculum vulgare in Montbazin, France. Aestivation (Latin: aestas (summer); also spelled estivation in American English) is a state of animal dormancy, similar to hibernation, although taking place in the summer rather than the winter.
All mammals sleep, but porpoises cannot afford to become unconscious for long because they may drown. While knowledge of sleep in wild cetaceans is limited, porpoises in captivity have been recorded to sleep with one side of their brain at a time, so that they may swim, breathe consciously, and avoid both predators and social contact during ...
Sleep is a highly conserved behavior across animal evolution, [6] likely going back hundreds of millions of years, [7] and originating as a means for the brain to cleanse itself of waste products. [8] In a major breakthrough, researchers have found that this cleansing may be a core purpose of sleep. [9]
Eugenie Clark (May 4, 1922 – February 25, 2015), popularly known as The Shark Lady, was an American ichthyologist known for both her research on shark behavior and her study of fish in the order Tetraodontiformes. Clark was a pioneer in the field of scuba diving for research purposes.