Body Rhythms and States of ConsciousnessSleep and dreaming(Snoring problems are correlated with obesity in upper torso. Middle aged men= most common)(everyone sleeps roughly the same amount per day (Except babies, 17 hrs/day))(sleep disorders are genetic, not from psychological problems)(the human body never adjusts to night shift work)Learning Goals(It takes 90-120 minutes to go REM-Stage1-Stage2-Stage3-(back to 2)-REM (cycle), have roughly 4-5 cycles/night)Rapid Eye Movement/dream sleep- eyes move rapidly/ where we have dreams (brain shuts out body sowe don’t act out dreams). Also got paradoxical sleep).Definitions of SleepWhy we sleep-Sleep deprivationoCircadian Rhythm (may be driven by ganglion cells in the eyes)-Sleep deprivationoWe need sleep to be able to function cognitively, and too much sleep deprivation will cause us to hallucinate, be cranky/grumpy, and be sleepy during the day.-Sleep as a restorative processoKids release growth hormones during sleep, so they dogrow while sleeping-Sleep as a clock driven processoCircadian Rhythm (may be driven by ganglion cells in the eyes). Our sleep-wake cycle is daily.oWe sleep better when it’s dark. Sleep hygiene is important, as well as making your sleep environment as best as possible, including darkness.-Consequences of Sleep deprivation:oAppetite: get less to eatoCognition: our memories aren’t as good, can’t focus welloImmune System: decreases with less sleep. People who are chronically sleep deprived, their immune systems don’t respond as well and they get sick more frequentlyoResearchRechtschaffen rats: would wake rats up in study and pop into water when they fall asleep. Only lasted 2 weeks before they diedwe need sleepDoctors are more likely to make mistakes during a long shift, need sleep. Mistakes could be life threateningCzeisler studied first year medical studentsMicrosleep: people fall asleep at the wheel for roughly 2/3-6 seconds, without us even knowing it, since we’re convinced we can fight it off. But sleep gets it when it wants it.Driving Tips:-What “may” work:oget sleep the night beforeoavoid alcohol (like medication makes you sleepy, but they tend to be short-term solutions)ohave your traveling companion help you stay awake- be activeomake frequent stops at rest areas and pull over at the first signs of fatigue:take a brisk walk
take a nap (pull over first)drink caffeine ohave someone drive with you, to keep you awakeolet someone else who has slept and is alert do the drivingoset reasonable travel objectives-What does NOT workoToughing it outoTurning your radio on your radiooOpening your car window for airoDriving faster/slowerWhy we dreamSleep disordersDevelopmental differences in sleepCultural differences in sleep practicesBody RhythmsBody RhythmsCircadian (about every 24 hours): •When we get tired depends on the time of day.