Chapter 7: States of Consciousness
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Created by:
Lindsey112 on February 6, 2012
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29 terms
Terms | Definitions |
|---|---|
 Consciousness | our awareness of ourselves and our environment |
| Biological rhythms | periodic physiological fluctuations |
| Circadian rhythm | the biological clock; regular bodily rhythms that occur on a 24-hr cycle |
| Suprachiasmatic nucleus | cluster in pineal gland that releases light-sensitive retinal proteins |
| Melatonin | neurotransmitter that delays sleep |
| alpha waves | relatively slow brain waves of a relaxed, awake state (conscious) |
| Sleep | periodic, natural, reversible loss of consciousness - as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation |
| Hallucinations | false sensory experiences, such as seeing something in the absence of an external visual stimulus |
| Hypnagogic sensations | feeling of falling and jerking awake or floating weightlessly |
| Sleep spindles | bursts of rapid, rhythmic brainwave activity |
| Delta waves | large, slow brain waves associated with deep sleep in stage 4 sleep |
| REM sleep | rapid eye movement sleep, a recurring sleep stage during which vivid dreams commonly occur; aka paradoxical sleep |
| Insomnia | recurring problems in falling or staying asleep |
| Narcolepsy | a sleep disorder characterized by uncontrollable sleep attacks. The sufferer may lapse directly into REM sleep at inopportune times |
| Sleep apnea | a sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings |
| Night terrors | a sleep disorder characterized bt high arousal and an appearance of being terrified; unlike nightmares, they occur during stage 4 sleep, w/i 2-3 hrs of falling asleep, and are seldom remembered |
| Dream | a sequence of images, emotions, and thoughts passing thru a sleeping person's mind |
| Manifest content | according to Freud, the remembered storyline of a dream |
| Latent content | underlying meaning of a dream |
| Information processing theory | sifts, sorts, and fixes the day's experiences into our memory |
| Physiological function | dreams may provide brain with periodic stimulation to develop and preserve neural pathways |
| Activation-synthesis theory | neural activity is random, and dreams are brain's attempt to make sense of it |
| REM rebound | tendency for REM sleep to increase following REM sleep deprivation (repeated awakenings in REM) |
| Hypnosis | social interaction in which one person suggests to another that certain perceptions, feelings, thoughts, or behaviors will spontaneously occur |
| Posthypnotic suggestion | a suggestion, made during a hypnosis session, to be carried out after the subject is no longer hypnotized; used by some clinicians to help control undesired symptoms and behaviors |
| Dissociation | a split in consciousness, which allows some thoughts and behaviors to occur simultaneously with others |
| Near-death experience | an altered state of consciousness reported after a close brush with death; often similar to drug-induced hallucinations |
| Dualism | the presumption that mind are body are two distinct entities that interact |
| Monism | the presumption that mind and body are different aspects of the same thing |
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