Sleep and Dreaming Flashcards
Circadian Rhythm AKA
sleep-wake cycle
Circadean Rhythms
daily rhythmic cycles guided by a biological clock
goverened by the nervous system
Effects of Circadian Rhythms
circadian rhythms affect yout behavior
Circadean Drift
Circadean Rhythm affected by what’s going on in the environment
Mammoth Cave
Cues to Sleep
Superchaismatic nuclei at the base of the hypothalamus
What is sleep?
Altered state of consciousness
Pre-Sleep
hypnogogic
semi dreamlike
hypnic jerk
Sleep
unconscious
active brain
Post-sleep
Hypnopompic
sleep paralysis
Arousal Levels
Stages of Sleep
REM Sleep
Narrative dreams reported (80%)
breathing and heart rate increase
muscles relaxed
Sleep and Memory
REM sleep aids procedural memory
SWS (slow wave sleep) aids declarative memory
Developmental Changes
- Less sleep when adults
- circadean rhythms change when older
- adolescents tend to go to sleep later/ wake up later
- adults earlier/ wake up earlier
Sleep Deprived Fatigue (graph)
Most tired in early morning
Sleep Deprived Fatigue
memory problems
aggresive behavior
microsleeps
Microsleeps
breif slips into sleep
little mental processing done
Effects of lost REM sleep
If you deprive self more time in REM sleep once you sleep
Sleep Disorders
Insomnia
Sleep Apnea
Somnambulism
Narcolepsy
Sleep Terrors (Night Terrors)
Somnambulism
sleep walking
SWS
Narcolepsy
Fall asleep at inappropriate times
Sleep Terrors
Slow wave sleep
Emotions get out of wack
Sleep Theories
- Restorative theory
- Evolutionary theory
- Off-line Neural processing
Restorative theory
Restores body’s resources
Evolutionary Theory
keeps body motionless, away from predators
conserve resources
Off-line Neural Processing
EG., memory consolidation
Dreams
- More emotional
- less logical but accepted
- poorly remembered
- Sensory filled
Why dream?
Problem solving
Activation-synthesis
Manifest Content
What the dream seems to be about
Latent Content
What the dream is really about
Problem Solving
Cognitive
work on unresolved problems
Activation-Synthesis
biological
brain-stem stimulates neurons to excercise
Sleep Waves
- Beta
- Alpha
- Theta
- Sleep Spindles
- K Complexes
- Delta
Sleep Waves- Awake
Beta and Alpha
Sleep Waves- Stage 1
Theta Waves
Sleep Waves- Stage 2
Sleep Spindles
K Complexes
Sleep Waves- Stage 3
Theta Waves
Delta Waves
Sleep Waves- Stage 4
Delta Waves
Sleep Waves- REM Sleep
Theta Waves
Beta Waves
Lucid Dreaming
Conscious of strangeness of dream then aware that dreaming
Nightmare
- Bad dream
- Severe
- Can result from stress
- Problem– Emotional regulation
- Might remember beter because they’re so emotional
