chapter 6 Flashcards
consciousness
our immediate awareness of our internal and external states
select attention
select specific stimuli while ignoring others
Biological rhythms
internal rhythms of biological activity
Circadian rhythm (biological clock)
pattern of sleep-wake cycles that in humans roughly correspond to a period of day and night
sleep regulation
brain’s ability to switch between sleep and wakefulness in response to the external environment
Circadian rhythm sleep disorder
excessive sleepiness or insomnia due to a mismatch between their sleep cycle and that of others in their environment
Sleep rebound
we fall asleep quickly if we’re sleep-deprived
Restorative Theory of Sleep
holds that sleep restores our brains
and bodies
Adaptive Theory of Sleep
the theory that organisms sleep for the
purpose of self-preservation, to keep away from the predator
REM (rapid eye movement)
darting eye movements under lids
and active brain waves
Non-REM
variation in brain waves identifying 4 phases ranging in wakefulness
Paradoxical sleep
deep sleep and relaxed, but considerable brain
activity
manifest content
what you are able to recall - actual event
latent content
unconscious elements - symbolic meaning
Lucid dreams
when the sleeper knows they are dreaming and can actively guide the outcomes
Daydreams
fantasies that occur while one is awake and aware of external reality but is not fully conscious
Nightmares
dreams filled with intense anxiety, helplessness, powerlessness, danger
insomnia
an inability to fall or stay asleep often triggered by; stress, drug use, exercise, bedtime routine
cognitive behavioral therapy
psychotherapy that focuses on cognitive processes and problem behaviors
parasomnia
a group of sleep disorders
- disruptive motor activity in REM or Non-REM
- sleepwalking, restless leg syndrome, night terrors
sleepwalking (somnambulism)
most often takes place during the first 3hr of sleep. occurs in 5% of children; appears to be inherited
REM sleep behavior disorder (RBD)
muscle paralysis during REM seizes to occur
- a lot of motor activity (posing a risk)
related to Parkinsons’ disease - now act as a diagnostic indicator