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