Chapter 5.1 Flashcards

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1
Q

Consciousness

A

-our awareness of internal and external stimuli
-our subjective awareness of the world

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2
Q

Circadian Rhythm

A

-cyclical changes that occur on a 24-hour basis
-hormone release
-brain waves
-body temperature
-drowsiness

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3
Q

Suprachiasmatic Nucleus (SCN)

A

-biological clock
-in the hypothalamus
-controls our level of alertness
-signals pineal gland to release melatonin

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4
Q

Average Amount of Sleep Needed/Day

A

-7-10 hours
-infants need 16h

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5
Q

Sleep Deprivation

A

-missing a period or restful sleep
-over one or more days

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6
Q

Sleep Debt

A

-accumulated sleep loss over multiple days

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7
Q

Rapid Eye Movement (REM)

A

-darting of the eyes underneath closed eyelids during sleep

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8
Q

non-REM Sleep

A

-stages 1-4 when rapid eye movements do not occur
-dreaming is less vivid and frequent

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9
Q

Before Sleep

A

-you are active then get drowsy

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10
Q

Beta waves

A

-brain waves
-12-13 cycles/second
-awake and alert

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11
Q

Alpha Waves

A

-brain waves
-8-12 cycles/sec
-relaxed and drowsy

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12
Q

Stage 1: Light Sleep

A

-lasts only 5-10 mins
-changes from alpha/beta waves to THETA waves
-myoclonic jerks and hypnagogic imagery
-confused state of mind

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13
Q

Theta Waves

A

-slow brain waves
-4-7 cycles/sec

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14
Q

Hypnagogic Imagery

A

-scrambled, bizarre, dream-like images
-in and out of consciousness

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15
Q

Myoclonic Jerks

A

-sudden jerky movements
-startled or falling limbs

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16
Q

Stage 2 Sleep

A

-lasts 10-25 mins
-brain waves slow down even more
-sleep spindles
-K-complexes
-heart rate slows
-body temp. decreases
-muscles relax
-eye movements cease

17
Q

Sleep Spindles

A

-sudden intense electrical activity bursts
-12-14 cycles/sec

18
Q

K-complexes

A

-sharply rising and falling waves

19
Q

Stage 3 and 4 Sleep

A

-10-30 mins
-slow wave sleep - delta waves
-important stages in feeling rested
-Stage 3 - 20-50% delta
-Stage 4 - 50%+ delta

20
Q

Delta Waves

A

-slow waves
-0.5-2 cycles/sec

21
Q

Effect of Alcohol

A

-suppresses delta sleep

22
Q

Stage 5: REM sleep

A

-brain is most active
-vivid dreaming
-20-25% of our nights sleep
-increased heart rate and blood pressure
-body is paralyzed

23
Q

Dreaming

A

-in both REM and NREM, more in REM

24
Q

Order of Sleep Cycle

A

-1,2, 3, 4, 3, 2, 1, REM, 1, 2…

25
Q

Lucid Dreaming

A

-experience of becoming aware you are dreaming when asleep

26
Q

Insomnia

A

-difficulty falling and staying asleep
-may wake too early in morning or during the night
-night routine can help fix
-treatment: sleeping pills or psychotherapy

27
Q

Narcolepsy

A

-rapid and often unexpected onset of sleep
-may be: genetic, brain damage, lack of orexin hormone
-treated by: modafinil, orexin replacement

28
Q

Sleep Apnea

A

-blockage of airway during sleep
-results in daytime fatigue
-treatment: weight loss, tonsil removal, CPAP machine

29
Q

Night Terrors

A

-sudden waking episodes
-screaming, sweating, confusion
-return to deep sleep prior to
-occurs in many children

30
Q

Sleepwalking

A

-walking while fully asleep
-sleep deprived people more likely to sleepwalk

31
Q

Dreams

A

-help process emotional memories
-integrate new experiences
-learning
-simulating threats to better cope in real life
-consolidate memories

32
Q

Freud’s Dream Protection Theory

A

-dreams are the guardians of sleep
-normally controlled impulses come to the surface and can disturb sleep
-dream work disguises impulses and transforms then into wish fulfillment symbols

33
Q

Manifest Content

A

-the things we experience in dreams
-Freud

34
Q

Latent Content

A

-the hidden meaning behind our dreams
-Freud

35
Q

Activation Synthesis Theory

A

-dreams reflect inputs from brain activation originating in the pons
-forebrain attempts to weave into a story
-dreams attempt to make sense of random signals during REM

36
Q

Neurocognitive Theory

A

-dreams are a meaningful product of our cognitive capacities
-these shape what we dream about

37
Q

Dream Continuity Hypothesis

A

-there is continuity between sleeping and waking experiences
-dreams mirror life circumstances

38
Q

Forebrain and Dreaming

A

-a theory in dreaming
-doesn’t answer the “why?”