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23 terms

States of Consciousness

TCCD Fall 2011, Psych 2301, Velarde instructor. Text Wood, Wood, and Boyd 7th
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Consciousness
a state of awareness, including a person's feelings, sensations, ideas, and perceptions
Altered states of consciousness
Changes in awareness produced by sleep, meditation, hypnosis, and drugs
Circadian rhythms
the biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24-hour cycle
suprachiasmatic nucleus
a cluster of neurons in the hypothalamus that receives input from the retina regarding light and dark cycles and is involved in regulating the biological clock
restorative theory of sleep
The theory that the function of sleep is to restore body and mind.
circadian theory of sleep
sleep evolved in humans out of harms way during the night (AKA evolutionary theory)
Drowsiness
sleepiness increases as alpha waves become more frequent than beta waves
Stage 1
Transitioning from waking to sleeping, irregular waves with occasional alpha
stage 2
from light to deeper sleep. sleep spindels - alternating calm and flashes of intense activity
stage 3
Deeper sleep; slow wave sleep. 20% of waves are Delta
stage 4
Deepest sleep; 50% of waves are now Delta.
parasomnias
a catergory of sleep disorders characterized by arousal or activation during sleep or sleep transitions; inclues sleepwalking, night terrors, sleep bruxism(teeth grinding), sleep-related eating disorder, and REM sleep behavior disorder
dyssomnias
Sleep disorders characterized by disturbances in the amount, quality or timing of sleep. Example include Insomnia, Sleep Apnea, and Narcolepsy
narcolepsy
a sleep disorder characterized by sudden and uncontrollable episodes of deep sleep
insomnia
sleep abnormalities, including difficulty in falling asleep and wakefulness through the night
sleep apnea
a sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings
Lucid dreaming
the theory that conscious awareness of dreaming is a learnable skill that enables dreamers to control the direction and content of their dreams
manifest content
according to Freud, the remembered story line of a dream
latent content
according to Freud, the underlying meaning of a dream (as distinct from its manifest content). Freud believed that a dream's latent content functions as a safety valve.
cognitive theory of dreaming
The view that dreaming is thinking while asleep.
activation-synthesis hypothesis of dreaming
The hypothesis that dreams are the brain's attempt to make sense of the random firing of brain cells during REM sleep.
evolutionary theory of dreaming
vivid dreams enable people to rehearse skills needed to deal with threatening events
psychoactive drug
A drug that alters behavior, thought, or perception by altering biochemical reactions in the nervous system, thereby affecting consciousness