Module 9: Sleep and Dreams Flashcards Preview

A.P. Psychology > Module 9: Sleep and Dreams > Flashcards

Flashcards in Module 9: Sleep and Dreams Deck (32):
1

sleep

periodic natural loss of consciousness

2

circadian rhythm

biological 24 hour clock

3

lark

morning peak of alertness, tends to be adults

4

owl

evening peak of alertness, tends to be young adults

5

how does light regulate sleep

light detecting cells in eyes send info to suprachiasmatic nucleus which sends info to pineal gland to produce (or not) melatonin

6

melatonin

makes you tired

7

sleep stages

distinctive changes of electrical activity of brain and physiological processes

8

sleep cycles

patterns of shifting through all sleep stages, takes about 90 minutes

9

polysomnography

sleep study, records brain activity, eye movements, breathing

10

beta waves

awake, attentive state; high frequency, low amplitude

11

alpha waves

awake, nonattentive state; lower frequency, higher amplitude

12

NREM 1

stage 1, theta waves (small, irregular), hypnogogic sensations

13

hypnogogic sensations

similar to hallucinations

14

hypnagogic jerk

body mistaking dreaming for falling

15

NREM 2

stage 2, sleep spindles on EEG, about 20 minutes

16

NREM 3

stages 3 and 4, delta waves, deep sleep, physiological processes slow

17

REM sleep

paradoxical sleep - brain and physiological processes active, body not active

18

sleep paralysis

waking up during REM sleep paralyzed due to brainstem preventing body response to brain activity

19

five reasons for sleep

protection, repairs brain and body, strengthens memory, facilitates creative problem solving, growth hormone released

20

sleep deprivation

decreased memory, suppressed immune system, increased risk of depression, obesity, reduced strength

21

insomnia

persistent inability to fall asleep/stay asleep

22

narcolepsy

uncontrollable sleep attacks

23

sleep apnea

repeated awakening after breathing stops

24

night terrors

sudden scared-looking behavior, rapid heartbeat and breathing, occurs in NREM 3

25

sleepwalking and talking

runs in families, mostly affects children, occurs in NREM 3

26

dreams

images, emotions, thoughts during sleep; mostly in REM sleep; usually negative content

27

lucid dreaming

being aware that you are dreaming and can manipulate your dreams

28

Freud theory of dreaming

wish fulfillment; dreams composed of manifest content and latent content

29

manifest content

remembered storyline of dream

30

latent content

underlying meaning of dream

31

three supported reasons for dreaming

process info and consolidate memories; develop/preserve neural pathways by keeping them active; brain making sense of high activity

32

REM rebound

tendency for REP sleep to increase following REM deprivation