NSCI 201 Chapter Notes - Chapter 28: Unihemispheric Slow-Wave Sleep, Suprachiasmatic Nucleus, Theta Wave
8 May 2016
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Experiment: total sleep deprivation in white rat, sleep state monitored through eeg. Over time, body weight decreases, food intake increases, rat dies. There exists a human disorder that prevents sleep this is genetic and fatal. Not sure why sleep is necessary as of right now possibly needed for memory consolidation in the brain. As we age, we tend to need less sleep. Babies tend to need the most sleep, up to 24 hours a day. If there is a sleep debt, it will be paid. Many biological rhythms, including sleep, have a 24 hour period. Eg. cortisol (stress hormone) peaks right before waking. If these rhythms are disrupted, kids can fall off growth curves. Sleep rhythms are determined by production and degradation of proteins throughout the day. This is tied into daylight cycles when in darkness, without light cues, cycle can gradually slip, although duration remains relatively consistent.
