The Functions of Sleep Essay - 1096 Words

The Functions of Sleep FUNCTIONS OF SLEEP: #61623; Sleep has not one main function but many. #61623; A most popular theory on why we sleep is the restorative theory of sleep: #61623; Restorative Theory: the theory of sleep that states that we sleep in order to replenish the processes of our minds and bodies that are depleted during the coarse of everyday life. #61623; Increases in low wave sleep correlate with increases in physical activity #61623; During REM sleep, proteins and other cellular components are returned to body #61623; But is the restorative theory valid? #61623; Second Wind Phenomenon, the fact that peoples sleepiness disappears when they have not slept counters the restorative theory.†¦show more content†¦#61623; People who work nights experience more physical problems and more stress. #61623; The goal is to avoid, clocks on collision, and to allow internal clocks to match external clocks, this is why night shifts are often on weekly rotation. SLEEP-WAKEFULNESS AS A CIRCADIAN RHYTHM: #61623; Free Running Rhythms: are the natural rhythms that occur in the absence of time cues; typically running about 25 hours in humans. #61623; An example of the detrimental consequences of the collision of external and internal clocks is jet lag. #61623; Jet Lag: internal biological clocks collide with external clocks as a result of moving across several time zones. STAGES OF SLEEP: #61623; Sleep is not uniform activity, but one produced of different brain waves throughout the night. #61623; 1953: Eugene Aserinsky and Nathaniel Klietman noticed periodic bursts of eye-movement during sleep. #61623; REM Sleep (Rapid Eye-Movement Sleep): a stage of sleep associated with dreaming, and characterized by frequent eye movements, suppression of the muscles. #61623; NREM Sleep (non-rapid eye movement sleep): all sleep occurring outside of REM sleep. #61623; There are five stages of sleep, REM and NREM stages 1, 2, 3, 4. #61623; The typical sleeping pattern is 1-2-3-4-3-2-REM #61623; Prior to Stage #1: there is a period of drowsiness in which appear alphaShow MoreRelatedOn the Function and Evolution of Sleep1544 Words   |  7 PagesOn the Function and Evolution of Sleep If physiologists devoted the most research time to behaviors humans engaged in the most, we would probably have a full understanding of the biological purpose of sleep. 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