Chapter 7.1:Sleep and Dreams
Mrs. Thillensw/special thanks to
Mr. McCormick
Psychology
• On average, how much sleep do you regularly get?
● How do you feel after a full night’s rest?
● How do you feel if you do not get enough sleep?
Consciousness
• Consciousness:• A state of awareness, including a person’s
feelings, sensations, ideas, and perceptions
• When we discuss states of consciousness, we are referring to our state of awareness.
Stages of Sleep
• Stage I.• Lightest Level of Sleep• Pulse Slows• Muscles Relax• Breathing and Brain Waves become irregular• Alpha Waves
Stages of Sleep
• Stage II.• Low-amplitude/high-frequency brain waves• Eyes roll from side to side
• Stage III.• Large amplitude delta waves
Stages of Sleep
• Stage IV.• Deepest Level of Sleep• Large amplitude delta waves• Possibilities:
• Sleepwalking• Talking aloud• Bed-wetting
• Important to physical and psychological well-being
Stages of Sleep
• REM Sleep: Happens in Stage IV• “Rapid Eye Movement” Sleep• Dreaming• Pulse and heart rate become irregular• Face or fingers may twitch• Large muscles become paralyzed
Stages of Sleep
“Jet Lag”
• Have you ever experienced “Jet Lag?”
• How did you feel?
• Why do you think this occurs?
Circadian Rhythm
• Circadian Rhythm:• The rhythm of activity and inactivity lasting
approximately one day• We are genetically programmed to regulate
physiological responses within a 24 hour period
• Jet lag occurs when our internal rhythm does not match the external time