Thinking About Psychology

Charles T. Blair-Broeker & Randal M. Ernst PowerPoint Presentation Slides by Kent Korek Germantown High School Worth Publishers, © 2012

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Biopsychology Domain

Andreas Pollok/the Image Bank/Getty images

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Consciousness

Davies and Starr/The Image Bank/Getty Images

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Module 08

Sleep, Dreams, and Body Rhythms

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Module Overview • • • • • •

Consciousness Body Rhythms Sleep and Sleep Deficit Why We Sleep Sleep Stages, REM Sleep and Dreaming Sleep Disorders and Sleep Problems

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Module 08: Sleep, Dreams, and Body Rhythms

Consciousness

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Consciousness • Awareness of yourself and your environment.

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Module 08: Sleep, Dreams, and Body Rhythms

Body Rhythms

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Pseudoscientific Claim • Any assertion that appears scientific but is not based on science. • Appears to be scientific but is not

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Biological Rhythms • Periodic physiological fluctuations. • Can affect physiological functioning • Fall into three main categories – Circadian Rhythms – Ultradian Rhythms – Infradian Rhythms

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Circadian Rhythms • Biological rhythms (for example, of temperature and wakefulness) that occur approximately every 24 hours. • Example: Sleep-wake cycle and temperature

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Ultradian Rhythms • Biological rhythms that occur more than once each day. • Example: Stages of sleep throughout the night

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Infradian Rhythms • Biological rhythms that occur once a month or once a season. • Example: Women’s menstrual cycle

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Module 08: Sleep, Dreams, and Body Rhythms

Sleep and Sleep Deficit

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Sleep Deprivation Effects • Decreases efficiency of immune system functioning • Safety and accident issues • Contributes to hypertension, impaired concentration, irritability, etc.

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Sleep Deprivation

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Module 08: Sleep, Dreams, and Body Rhythms

Why We Sleep

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Hypothalamus • Sleep control center in the brain • Monitors changes in light or dark in the environment • Changes levels of hormones in the body

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Melatonin • Hormone that helps regulate daily biological rhythms. • Linked to the sleep-wake cycle • Melatonin level increases during the night and decreases with exposure to morning light

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Reasons for Sleep • Two primary reasons: – Preservation: keep us protected from the dangers of the night – Restoration: recuperate from the wear and tear of the day

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Module 08: Sleep, Dreams, and Body Rhythms

Sleep Stages, REM Sleep and Dreaming

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Electroencephalograph (EEG) • Machine that amplifies and records waves of electrical activity that sweep across the brain’s surface; • electrodes placed on the scalp measure these waves. Wednesday, February 4, 15

HANK MORGAN/RAINBOW

EEG

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EEG

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Wake State to Stage 1

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Stage 1 Sleep • Breathing is slowed. • Brain waves become irregular. • It is easy to wake the person, who will insist they are not asleep. • Rarely lasts longer than 5 minutes

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Stage 1

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Stage 2 Sleep • Brain wave cycle slows. • First time through stage 2 last about 20 minutes.

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Stage 2

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Stages 3 and 4 Sleep • Slow wave sleep • First time through stage 4 is about 30 minutes and is where one gets rejuvenated

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Stage 3

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Module 08: Sleep, Dreams, and Body Rhythms

Sleep Stages, REM, and Dreaming: REM Sleep Wednesday, February 4, 15

Non-REM Sleep • Stages 1 - 4 considered N-REM (nonREM sleep)

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Rapid Eye Movement (REM) Sleep • Recurring sleep stage during which vivid dreams commonly occur. • Called rapid eye movement (REM Sleep) as eyes move quickly back and forth • Considered “paradoxical sleep” • Term coined by William Dement

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Paradoxical Sleep • During REM sleep brain wave patterns are similar to when a person is awake • Pulse and breathing quickens. • REM sleep is sometimes called paradoxical sleep as one’s physiology is close to that of being awake but the brainstem blocks all muscle movement

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Typical Night’s Sleep

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Stage 4/REM Changes

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Sleep Changes through Life

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Module 08: Sleep, Dreams, and Body Rhythms

Sleep Stages, REM, and Dreaming: Why Do We Dream? Wednesday, February 4, 15

Information-Processing Theory • Dreams serve an important memoryrelated function by sorting and sifting through the day’s experiences • Research suggests REM sleep helps memory storage.

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Information-Processing Theory

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Physiological Function Theory • Neural activity during REM sleep provides periodic stimulation of the brain.

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Physiological Function Theory

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Activation-Synthesis Theory • Dreams are the mind’s attempt to make sense of random neural firings in the brain as one sleeps.

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Activation Synthesis Theory

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Cognitive Development Theory • Dreams part of the maturation process • Dreams reflect our knowledge • Reflection of normal cognitive development

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Cognitive Development Theory

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Module 08: Sleep, Dreams, and Body Rhythms

Sleep Disorders and Sleep Problems

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Insomnia • Recurring problems falling asleep or staying asleep. • Sleeping pills tend to inhibit or suppress REM sleep; worsen the problem • Alcohol suppresses REM sleep; also worsens the problem • Studies show most people overestimate how long it took them to get to sleep Wednesday, February 4, 15

Sleep Apnea • Sleep disorder characterized by temporary cessations of breathing during sleep and consequent momentary reawakenings. • Tend to be loud snorers • Continuous Positive Airway Pressure machine

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Narcolepsy • Sleep disorder characterized by uncontrollable sleep attacks; • the sufferer may lapse directly into REM sleep, often at inopportune times. • Nervous system getting aroused tends to trigger the sleep attack

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Somnambulism • Sleepwalking, which usually starts in the deep stages of NREM sleep; • the sleepwalker can walk or talk and is able to see but rarely has any memory of the event.

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Night Terrors • Sleep related problem characterized by high arousal and an appearance of being terrified; • unlike nightmares, they occur during NREM 3 sleep, occur within two or three hours of falling sleep, and • are seldom remembered.

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Other Sleep Disorders • Bruxism – teeth grinding • Enuresis – bed wetting • Myoclonus – sudden jerk of a body part occurring during stage 1 sleep – Everyone has occasional episodes of myoclonus

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The End

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Teacher Information • Types of Files – This presentation has been saved as a “basic” Powerpoint file. While this file format placed a few limitations on the presentation, it insured the file would be compatible with the many versions of Powerpoint teachers use. To add functionality to the presentation, teachers may want to save the file for their specific version of Powerpoint.

• Animation – Once again, to insure compatibility with all versions of Powerpoint, none of the slides are animated. To increase student interest, it is suggested teachers animate the slides wherever possible.

• Adding slides to this presentation – Teachers are encouraged to adapt this presentation to their personal teaching style. To help keep a sense of continuity, blank slides which can be copied and pasted to a specific location in the presentation follow this “Teacher Information” section.

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Teacher Information • Domain Coding – Just as the textbook is organized around the APA National Standards, these Powerpoints are coded to those same standards. Included at the top of almost every slide is a small stripe, color coded to the APA National Standards. • Scientific Inquiry Domain • Biopsychology Domain • Development and Learning Domain • Social Context Domain • Cognition Domain • Individual Variation Domain • Applications of Psychological Science Domain

• Key Terms and Definitions in Red – To emphasize their importance, all key terms from the text and their definitions are printed in red. To maintain consistency, the definitions on the Powerpoint slides are identical to those in the textbook. Wednesday, February 4, 15

Teacher Information • Hyperlink Slides - Immediately after the unit title slide, a page (usually slide #4 or #5) can be found listing all of the module’s subsections. While in slide show mode, clicking on any of these hyperlinks will take the user directly to the beginning of that subsection. This allows teachers quick access to each subsection.

• Continuity slides - Throughout this presentations there are slides, usually of graphics or tables, that build on one another. These are included for three purposes. • By presenting information in small chunks, students will find it easier to process and remember the concepts. • By continually changing slides, students will stay interested in the presentation. • To facilitate class discussion and critical thinking. Students should be encouraged to think about “what might come next” in the series of slides.



Please feel free to contact me at [email protected] with any questions, concerns, suggestions, etc. regarding these presentations. Kent Korek Germantown High School Germantown, WI 53022

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