Lecture October 03, 2007

Lecture October 03, 2007 - Very essential for a person. The...

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October 03, 2007 Sleep. o Most adults need 8-9 hours of sleep. o Chernobyl and 3-Mile Island happened in early morning hours. o 30% of college students fall asleep at least once per class. o Sleep disorders: Insomnia. Narcolepsy: Uncontrollable random sleep attacks in which the tendency is to enter deep sleep while in the conscious state. Sleep Apnea: When the airway closes while asleep, thus causing the person to wake up. Sleep Terror: Usually happens to younger children, they wake up screaming because of nightmares. Sleep Paralysis: When your mind is awake but you body is paralyzed. You also tend to believe that there are objects around you. o EEG: Monitors electrical impulse changes in the brain while in the sleeping state. o Awake: Short frequent waves. o REM Sleep (Rapid Eye Movement): Very deep state of sleep, so very hard to wake up the person. Muscles are paralyzed.
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Unformatted text preview: Very essential for a person. The need for REM decreases over time. Infants spend about 50% of their time in REM. Drops to 20-25% by age 5. About 18% by age 60. Neurons relax by synchronizing and firing as they wish. Most dreams occur during REM. When taking naps for 2-3 hours at a time, you tend to enter REM. o Stage 1: Small rhythms. Not too hard to wake up the person. o Stage 2: Ups and downs in the rhythm. Not too hard to wake up the person. o Stage 3: Start to have longer waves known as Delta waves. Begins to get harder to wake up the person. o Stage 4: More waves such as those in stage 3. Cannot wake the person easily. Dreams: o Cognitive scientists believe that dreams are a method of sorting out the information from the day. o The closer you get to REM sleep, the more likely you are to remember the dream....
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Lecture October 03, 2007 - Very essential for a person. The...

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