ARE YOU DREAMING

1
ARE YOU DREAMING?

• The Adaptation of Sleep

2
Generating Questions

• Sleep
• Dreams
• What do you think?
• Why do humans dream?

3
Current Theories

• 1. Physiological stimulations
• 2. Psychologically necessary
• 3. Combination of physiology psychology

4
Dream Facts

• 5 to 20 minutes
• Not just black and white
• Several dreams a night
• People blind from birth dream with other senses
• When people are snoring, they're not dreaming.
• Elephants sleep standing up during non-REM sleep,
  but lie down for REM sleep.

5
Effects of too little sleep

• Skipping one night's sleepcranky/clumsy
• Two nights of no sleepproblems thinking/doing
  normal tasks
• Five nights without sleephallucinations
• Eventuallybrain cannot give directions to the
  rest of the body

6
Sleep Requirements
7
Voluntary or Involuntary?
8
Adaptation

• Are sleep dreaming adaptive?
• Is human sleep unique?