UNIT 3 THE CONSCIOUS SELF AREA OF STUDY 1: MIND, BRAIN & BODY

SLEEP DEPRIVATION GOING WITHOUT SLEEP PARTIAL SLEEP TOTAL SLEEP DEPRIVATION DEPRIVATION Having less than what Not having any is normally required sleep at all KK 4A – PAGE 153

SLEEP DEPRIVATION PARTIAL SLEEP DEPRIVATION RESULTS IN: Tiredness Lack of energy Lapses in attention Inability to concentrate for a long period of time A low level of motivation Loss of interest and enjoyment in activities Impaired motor skills Irritability Occasional headaches Decline in ability to perform cognitive tasks Processing information in short-term working memory impaired KK 4A – PAGE 153-154

SLEEP DEPRIVATION TOTAL SLEEP DEPRIVATION RESULTS IN: PSYCHOLOGICAL PHYSIOLOGICAL Anxiety Disorders Hand tremors Depression Drooping eyelids Hypertension Difficulty focusing the eyes Sleep Disorders Lack of energy and strength Hallucinations (false perceptions) Slurred speech Delusions (false beliefs) Increased sensitivity to pain Paranoia Heart rate and body temperature drops Impaired functioning of immune system KK 4A – PAGE 154-156 It is difficult to judge if a person has total sleep deprivation due to microsleeps This is a very short period of drowsiness or sleeping that occurs when the person is apparently awake

CLASSROOM ACTIVITY ARE YOU SLEEP DEPRIVED? BOX 3.10 (pg.158-159) KK 4A – CLASSROOM ACTIVITY – BOX 3.10 (PAGE 158-159)

HOMEWORK LEARNING ACTIVITY 3.9 (pg.160) KK 2 – LEARNING ACTIVITY 3.9 (PAGE 160) KK 2 – LEARNING ACTIVITY 3.10 (PAGE 160)

THE PURPOSE OF SLEEP RESTORATION & SURVIVAL There are many different theories about why we sleep. These theories include: RESTORATION & SURVIVAL KK 2 – PAGE 160

THE PURPOSE OF SLEEP RESTORATION RESTORATIVE THEORIES OF SLEEP (Recovery theories/Restore & Recovery Theories) These theories propose that sleep provides ‘time out’ to help us recover from depleting activities during waking time that use up the body’s physical and mental resources NREM REM SLEEP SLEEP KK 2 – PAGE 160-162

THE PURPOSE OF SLEEP RESTORATION –NREM SLEEP RESTORATIVE THEORIES OF SLEEP NREM SLEEP – Important for restoring and repairing the body REM SLEEP – Restore the brain as well as play a role in memory and learning Provides regular ‘exercise’ to groups of neurons in the brain Assists in consolidating or embedding the memory of newly learned information KK 2 – PAGE 160-162

THE PURPOSE OF SLEEP RESTORATION –NREM SLEEP REM REBOUND People in sleep laboratories were regularly woken when they began REM sleep Researchers found that when they were allowed to sleep again, they spent longer in REM sleep than they normally would KK 2 – PAGE 160-162

THE PURPOSE OF SLEEP SURVIVAL SURVIVAL THEORIES OF SLEEP (Adaptive Theories/Evolutionary Theories/Preservation & Protection Theories) These theories propose that sleep evolved to enhance survival by protecting an organism through making it inactive during the part of the day when it is most risky and dangerous to move about (Meddis, 1977) EVIDENCE: Animals with few natural predators sleep for longer periods of time Animals with many natural predators sleep for shorter periods of time We sleep at night because we need light to see BUT WHY DOES SLEEP INVOLVE A LOSS OF CONSCIOUSNESS? KK 2 – PAGE 163-164

HOMEWORK LEARNING ACTIVITY 3.13 (pg.164) KK 2 – LEARNING ACTIVITY 3.13 (PAGE 164)

CHAPTER 3 CHAPTER 3 – TRUE OR FALSE QUIZ (pg.165) CHAPTER 3 – MULTIPLE CHOICE TEST (pg.166-168) CHAPTER 3 – SHORT ANSWER TEST (pg.168-169) CHAPTER 3 – TRUE OR FALSE QUIZ (PAGE 165) CHAPTER 3 – MULTIPLE CHOICE TEST (PAGE 166-168) CHAPTER 3 – SHORT ANSWER TEST (PAGE 168-169)