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Neuroscience Of Sleep
The neuroscience of sleep is the study of the neuroscience, neuroscientific and Physiology, physiological basis of the nature of sleep and its functions. Traditionally, sleep has been studied as part of psychology and medicine. The study of sleep from a neuroscience perspective grew to prominence with advances in technology and the proliferation of neuroscience research from the second half of the twentieth century. The importance of sleep is demonstrated by the fact that organisms daily spend hours of their time in sleep, and that sleep deprivation can have disastrous effects ultimately leading to death in animals. For a phenomenon so important, the purposes and mechanisms of sleep are only partially understood, so much so that as recently as the late 1990s it was quipped: "The only known function of sleep is to cure sleepiness". However, the development of improved imaging techniques like EEG, Positron emission tomography, PET and fMRI, along with Moore's law, faster computers h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sleep (non-human)
Sleep is a biological requirement for all animals that have a brain, except for ones which have only a rudimentary brain. Therefore Basal (phylogenetics), basal species do not sleep, since they do not have brains. It has been observed in mammals, birds, reptiles, amphibians, fish, and, in some form, in arthropods. Most animals feature an internal circadian clock dictating a healthy sleep schedule; Diurnality, Diurnal organisms, such as humans, prefer to sleep at night; Nocturnal organisms, such as rats, prefer to sleep in the day; Crepuscular organisms, such as felidae, prefer to sleep for periods during both. More specific sleep patterns vary widely among species, with some foregoing sleep for extended periods and some engaging in Unihemispheric slow-wave sleep, unihemispheric sleep, in which one brain hemisphere sleeps while the other remains awake. Sleep as a phenomenon appears to have very old evolutionary roots. Unicellular organisms do not necessarily "sleep", although many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
