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Psy chapt 4
Psychology chapter 4
| Term | Definition |
|---|---|
| consciousness | One’s subjective experience of the world, resulting from brain activity. |
| change blindness | A failure to notice large changes in one’s environment. |
| subliminal perception | The processing of information by sensory systems without conscious awareness. |
| circadian rhythms | Biological patterns that occur at regular intervals as a function of time of day. |
| REM sleep | The stage of sleep marked by rapid eye movements, dreaming, and paralysis of motor systems. |
| insomnia | A disorder characterized by an inability to sleep. |
| obstructive sleep apnea | A disorder in which a person, while asleep, stops breathing because his or her throat closes; the condition results in frequent awakenings during the night. |
| narcolepsy | A sleep disorder in which people experience excessive sleepiness during normal waking hours, sometimes going limp and collapsing. |
| dreams | Products of an altered state of consciousness in which images and fantasies are confused with reality. |
| activation-synthesis theory | A theory of dreaming; this theory proposes that the brain tries to make sense of random brain activity that occurs during sleep by synthesizing the activity with stored memories. |
| hypnosis | A social interaction during which a person, responding to suggestions, experiences changes in memory, perception, and/or voluntary action. |
| meditation | A mental procedure that focuses attention on an external object or on a sense of awareness. |
| addiction | Drug use that remains compulsive despite its negative consequences. |
| Stimulants | Increase behavioral and mental activity |
| Depressants | Decrease behavioral and mental activity |
| Opiates/ narcotics | Reude the experience of pain |
| Hallucinogens/ psychedelics | Alter thoughts or perceptions |
| Combination | Mixed effects |