39 terms

PsychHB - Sleep & Dreams

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consciousness
awareness of things inside you and outside you
construct
Something that we can't directly see or measure
altered state of consciousness
a state of awareness that is not regular, waking consciousness
circadian rhythms
Biological rhythms that change over a 24-hour period
EEG
Measures electrical activity in brain (brain waves)
frequency
how fast a brain wave is
amplitude
how large a brain wave is
Stage 1 sleep
the lightest stage of sleep
Stage 2 sleep
stage of sleep a little deeper than stage 1
Stages 3 & 4 sleep
deep sleep; difficult to wake person; often disoriented if wake up; talking and walking in sleep happen here
NREM sleep
non-REM sleep; includes sleep stages 1-4
rapid-eye-movement (REM) sleep
sleep that features vivid, long-lasting dreams; similar to being awake; irregular breathing, heart rate; difficult to awaken from; body "paralyzed"
sleep debt
lost sleep must be "paid back"
reasons we sleep
REM sleep important for memory; restorative; fight infection; deal with stress
narcolepsy
a sleep disorder characterized by sudden and uncontrollable episodes of REM sleep
sleep apnea
a sleep disorder characterized by temporary breathing stoppages during sleep and repeated awakenings
sleepwalking
walking while in stage 3 or 4 of sleep (i.e., deep sleep)
night terror
a sleep disorder characterized by terror and physical arousal; unlike nightmares, night terrors are not usually remembered
insomnia
the inability to fall asleep or stay asleep
dream
state of consciousness that occurs during sleep
lucid dream
a dream in which the dreamer is aware that he/she is dreaming
manifest content
according to Sigmund Freud, the part of a dream that is remembered, the "story" of the dream
latent content
according to Sigmund Freud, the hidden meaning of a dream
dreamwork
the ways in which the mind hides the true meaning of a dream
condensation
combining different dream ideas and images into single image
displacement
disturbing image or idea is replaced by something related but less disturbing
purpose of a dream according to Freud
to fulfill unacceptable wishes
purpose of a dream according to Jung
make sense of day's activities; express unconscious urges; predict future
collective unconscious
the shared unconscious images and ideas passed down through human history from our ancestors
activation-synthesis theory
a biological theory of dreams that states that neurons in brain stem fire randomly, activate higher areas ; then higher areas try to make sense of what's going on
cognitive theory of dreams
dreams show same kind of thinking people do when awake, and is a type of "mental housekeeping"
preconscious
according to Freud, the part of the mind that is not currently in consciousness, but could be made conscious with a little effort; includes memories and stored knowledge
conscious
according to Freud, the part if the mind that contains what a person is currently aware of
unconscious
according to Freud, the part of the mind holding information that a person is not aware of; contains unacceptable wishes, immoral urges, shameful experiences, etc.
adenosine
neurotranmitter that causes drowsiness
pineal gland
gland that produces melatonin
hypothalamus
structure in the brain involved in sleep
suprachiasmatic nucleus
part of the brain that monitors light and regulates the sleep/wake cycle
melatonin
hormone secreted by the pineal gland; causes drowsiness
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