Chapter 3: Consciousness Flashcards
our subjective awareness of ourselves and our environment
consciousness
a social interaction in which one person suggests to another that certain perceptions, feelings, thoughts, or behaviors will spontaneously occur
hypnosis
the interdisciplinary study of the brain activity linked with cognition (including perception, thinking, memory, and language)
cognitive neuroscience
focusing conscious awareness on a particular stimulus
selective attention
failing to see visible objects when our attention is directed elsewhere
inattentional blindness
failing to notice changes in the environment; a form of inattentional blindness
change blindness
the principle that information is often simultaneously processed on separate conscious and unconscious tracks
dual processing
a condition in which a person can respond to a visual stimulus without consciously experiencing it
blindsight
processing many aspects of a stimulus or problem simultaneously
parallel processing
processing one aspect of a stimulus or problem at a time; generally used to process new information or to solve difficult problems
sequential processing
a periodic, natural loss of consciousness—as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation
sleep
our biological clock; regular body rhythms (ex. temperature and wakefulness) that occur on a 24-hour cycle
circadian rhythm
rapid eye movement sleep; a recurring sleep stage during which vivid dreams commonly occur. Also known as paradoxical sleep, because the muscles are relaxed (except for minor sleep) but other body systems are active
REM sleep
the relatively slow brain waves of a relaxed, awake state
alpha waves
the large, slow brain waves associated with deep sleep
delta waves
a pair of cell clusters in the hypothalamus that controls circadian rhythm. In response to light, the SCN causes the pineal gland to adjust melatonin production, thus modifying our feelings of sleepiness
suprachiasmatic nucleus (SCN)
recurring problems in falling or staying asleep
insomnia
a sleep disorder characterized by uncontrollable sleep attacks. The sufferer may lapse directly into REM sleep, often at inopportune times
narcolepsy
a sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings
sleep apnea
a sleep disorder characterized by high arousal and an appearance of being terrified; unlike nightmares, night terrors occur during N3 sleep, within 2 or 3 hours of falling asleep, and are seldom remembered.
night terrors
a sequence of images, emotions, and thoughts passing through a sleeping person’s mind
dream
the tendency for REM sleep to increase following REM sleep deprivation
REM rebound
a chemical substance that alters perceptions and moods
psychoactive drug
a disorder characterized by continuing substance craving and use despite significant life disruption and/or physical risk
substance abuse disorder