chapter 3 consciousness and the two-track mind recognition Flashcards
our awareness of ourselves and our environment.
consciousness
the interdisciplinary study of the brain activity linked with cognition (including perception, thinking, memory, and language).
cognitive neuroscience
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
the focusing of conscious awareness on particular stimulus.
selective attention
failing to see visible objects when our attention is directed elsewhere
inattentional blindness
failing to notice changes in the environment.
change blindness
the biological clock; regular bodily rhythms (for example, of 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 twitches) but other body systems are active.
REM sleep
the relatively slow brain waves of a relaxed, awake state.
Alpha waves
periodic, natural, reversible loss of consciousness-as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation.
Sleep
false sensory experiences, such as seeing something in the absence of an external visual stimulus.
hallucinations
the large, slow brain waves associated with deep sleep.
delta waves
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 terror occur during NREM-3 sleep, within two or three hours of falling asleep, and are seldom remembered.
Night terrors