Unit 8: Consciousness (cont.)

                                  HYPNOSIS
Hypnosis:
A social interaction in which one person (the hypnotist) suggests to another person (the subject) that certain perceptions, feelings, thoughts, or behaviors will spontaneously occur.
Posthypnotic Amnesia: Supposed inability to recall what one experienced during hypnosis; induced by the hypnotist's suggestion.
Posthypnotic Suggestion: A suggestion, made during hypnosis, to be carried out after the subject is no longer hypnotized; used by some clinicians to control undesired symptoms and behaviors (e.g., eat less, quit smoking, feel less anxiety, etc.).

Hypnosis does not improve memory.  In fact, it is likely to contaminate our memories.  It is, however, useful in relieving PAIN.  Possibly due to dissociation or a "split in consciousness".  While part of the person is still aware of the pain, the conscious part of the person is not.
                        Theories of Hypnosis
1.  Divided Consciousness Theory:
Suggests that dissociation occurs during hypnosis.  A "split" in consciousness occurs.  "Part" of the person is unaware of what is occurring, but another "part" is aware.  This part is called:
       The Hidden Observer: Hilgard's term describing a hypnotized person's awareness of experiences, such as pain, that seem to go unreported during hypnosis.
2.  Social Influence Theory: The subject simply becomes caught up in the "role" of being a hypnotized person.  It involves role-playing, conformity, and obedience.
             DRUGS AND CONSCIOUSNESS
Psychoactive Drug: A chemical substance that alters perceptions and mood.
Tolerance: The diminishing effect with regular use of the same dose of a drug; requiring the user to take larger and larger doses in order to obtain the same effect.
Withdrawal: The discomfort and distress that follow discontinuing the use of an addictive drug.

Physical Dependence: A physiological need for a drug, marked by unpleasant withdrawal symptoms when the drug is discontinued.
Psychological Dependence: A psychological need to use a drug, such as to relieve negative emotions.
                        Psychoactive Drugs
Depressants:
Drugs (such as alcohol, barbiturates, and opiates) that reduce neural activity and slow body functions.
      Barbiturates: drugs that depress the activity of the CNS, reducing anxiety but impairing memory and judgment.
      Opiates: Opium and its derivatives (such as morphine and heroin); they depress neural activity, temporarily lessening pain and anxiety.
Stimulants: Drugs (such as caffeine, nicotine, and the more powerful amphetamines and cocaine) that excite neural activity and speed up body functions.
      Amphetamines: Drugs that stimulate neural activity, causing speeded-up body functions and associated energy and mood changes.
      Ecstasy (MDMA): A synthetic stimulant and mild hallucinogen.  It produces short-term euphoria.  However, it harms serotonin-producing neurons causing long-term changes in mood and cognitions.
Hallucinogens: Psychedelic ("mind-altering") drugs, such as LSD and marijuana, that distort perceptions and may evoke sensory images in the absence of sensory input (i.e., hallucinations).
      THC: The major active ingredient in marijuana.
                 
               NEAR-DEATH EXPERIENCES
Near-death Experience:
An altered state of consciousness reported after a close brush with death (such as after a cardiac arrest); often similar to drug-induced hallucinations.
Monism: The belief that mind and body are different aspects of the same thing (when the body dies, so does the mind.
Dualism: The belief that mind and body are two distinct entities (when the body dies, the mind may continue to exist).
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