Adaptation and survival: hypotheses about the neural mechanisms of unihemispheric sleep
| Autor: | Gian Gastone Mascetti |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fur Seals
05 social sciences Electroencephalography General Medicine Sleep in non-human animals Functional Laterality 050105 experimental psychology 03 medical and health sciences 0302 clinical medicine Arts and Humanities (miscellaneous) Brain laterality Unihemispheric slow-wave sleep Animals 0501 psychology and cognitive sciences Wakefulness Adaptation Sleep Psychology Neuroscience 030217 neurology & neurosurgery General Psychology |
| Zdroj: | Laterality. 26:71-93 |
| ISSN: | 1464-0678 1357-650X |
| DOI: | 10.1080/1357650x.2020.1828446 |
| Popis: | Sleep and wakefulness are opposite brain and body conditions that accomplish different but complementary functions. However, these opposing conditions have been combined in some animals by the adoption of a sleep/wake strategy that allows them to survive, while maintaining both an interaction with the environment at the same time as enabling brain and body recovery. They sleep with half of the brain while keeping the other half awake: a state known as unihemispheric sleep (US). Sleep of cetaceans is exclusively in the form of US; therefore, they experience neither bihemispheric sleep (BS) nor REM sleep. US episodes have also been recorded in eared seals and some species of birds. In those animals, US episodes are intermingled with episodes of BS and REM sleep. Studies have reported both a lateralized release of some neurotransmitters and a drop of brain temperature during US. The aims of this article are to formulate hypotheses about the neural mechanisms of unihemispheric sleep(US) based on findings regarding the neural mechanisms of the sleep/wake cycle of mammals. The neural mechanisms of the sleep/wake cycle are largely preserved across species, allowing to hypothesize about those triggering and regulating US. |
| Databáze: | OpenAIRE |
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