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Chapter 5
Consciousness: Body ryhthms and mental states
34
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11/18/2005

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Term
Consciousness
Definition
The awareness of oneself and the environment.
Term
Biological Rhythm
Definition
A periodic, more or less regular fluctuation in a biological system.
Term
Endogenous
Definition
Generated from within rather than by external cues.
Term
Circadian Rhythm
Definition
A biological rhythm with a period of about 24 hours.
Term
Suprachiasmatic Nucleus
Definition
An area of the brain containing a biological clock that governs circadian rhythms.
Term
Internal Desynchronization
Definition
A state in which biological rhythms are not in phase with one another.
Term
Melatonin
Definition
A hormone secreted by the penal gland; it is involved in the regulation of circadian rhythms.
Term
Seasonal Affective Disorder
Definition
A controversial disorder in which a person experiences depression during the winter and an improvement in mood in the spring.
Term
Insomnia
Definition
Inability to sleep at night.
Term
Sleep Apnea
Definition
A disorder in which breathing briefly stops during sleep, causing the person to choke and gasp, and momentarily awaken.
Term
Narcolepsy
Definition
A sleep disorder involving sudden and unpredictable daytime attacks of sleepiness or actual sleep.
Term
Stages of sleep
Definition
[come back later]
Term
REM (Rapid Eye Movement sleep)
Definition
Sleep periods characterized by eye movement, loss of muscle tone, and dreaming.
Term
Paradoxical Sleep
Definition
REM Sleep
Term
Lucid Dream
Definition
A dream in which the dreamer is aware of dreaming.
Term
Latent Content
Definition
The unconscious thoughts and wishes being expressed symbolically.
Term
Manifest Content
Definition
Aspects of a dream we consciously experience during sleep and may remember upon waking.
Term
Problem focused approach to dreaming
Definition
The symbols and metaphors in a dream do not disguise its true meaning; they convey it.
Term
Activation Synthesis Theory
Definition
The theory that dreaming results from the cortical synthesis and interpretation of neural signals triggered by activity in the lower part of the brain.
Term
Hypnosis
Definition
A procedure in which the practitioner suggests changes in the sensations, perceptions, thoughts, feelings, or behavior of the subject.
Term
Nature of Hypnosis
Definition
1) Hypnotic responsiveness depends more on the efforts and qualities of the person being hypnotized than on the skill of the hypnotist.
2) Hypnotized people cannot be forced to do things against their will.
3) Feats performed under hypnosis can be performed by motivated people without hypnosis.
4) Hypnosis does not increase the accuracy of memory.
5) Hypnosis does not produce a literal reexperiencing of long ago events.
6) Hypnotic suggestions have been used effectively for many medical and psychological purposes.
Term
Dissociation
Definition
A split in consciousness in which one part of the mind operates independently of others.
Term
Hidden Observer
Definition
Watching but not participating.
Term
Sociocognitive explanation of hypnosis
Definition
Holds that the effects of hypnosis result from an interaction between the social influence of the hypnotist and the abilities, beliefs, and expectations of the subject.
Term
Past Life Regression
Definition
[return later]
Term
Stimulants
Definition
Drugs that speed up activity in the central nervous system.
Term
Nitrous Oxide
Definition
[return later]
Term
Psychoactive Drugs
Definition
A drug capable of influencing perception, mood, cognition, or behavior.
Term
Depressants
Definition
Drugs that slow down activity in the central nervous system.
Term
Opiates
Definition
Drugs, derived from the opium poppy that relieve pain and commonly produce euphoria.
Term
Psychedelic Drugs
Definition
Consciousness-altering drugs that produce hallucinations, change thought processes, or disrupt normal perception of time and space.
Term
Tolerance
Definition
Increased resistance to a drug's effects accompanying continued use.
Term
Withdrawal
Definition
Physical and psychological symptoms that occur when someone addicted to a drug stops taking it.
Term
"Think Drink" Effect
Definition
'Men behaved more belligerently when they thought they were drinking vodka than when they thought they were drinking plain tonic water, regardless of the actual content of the drinks. And both sexes reported feeling sexually aroused when they thought they were drinking vodka, whether they actually got vodka or not.'
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