Chapter 3 - Chapter3 -TrackMind PsychoactiveDrugs-...

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Chapter 3 Consciousness and the Two-Track Mind Psychoactive Drugs- mood and perception altering substances Psychology- the description and explanation of states of consciousness Behaviorism- to turn to direct observations of behavior Psychology- (1960s) the science of behavior Cognition- mental processes Consciousness- our awareness of ourselves and our environment States of Consciousness- normal waking awareness and various altered states Marvin Minsky- the mind is what the brain does Cognitive Neuroscience - the interdisciplinary study of the brain activity linked with cognition (including perception, thinking, memory, and language) Dual Processing: The Two-Track Mind Dual Processing- the principle that information is often simultaneously processed on separate conscious and unconscious tracks David Milner and Melvyn Goodale- (2008) D.F. has brain damage yet exhibited blindsight Blindsight- a condition in which a person san respond to a visual stimulus without consciously experiencing it What are the mind’s two tracks, and what is “dual processing”? Out mind has separate conscious and unconscious tracks that perform dual processing- organizing and interpreting information simultaneously Selective Attention Selective Attention- the focusing of conscious awareness on a particular stimulus You take in about 11,000,000 bits of information per second, of which you consciously process about 40 Cocktail Party Effect- your ability to attend to only one voice among many Selective Attention and Accidents 28% of accidents occur when people are chatting on cellphones or texting 23 times greater risk of crashing if texting In areas vital to driving, brain activity decreases on average 37% percent when a driver is attending to conversation 1 in 4 teens admit to texting while driving Having a passenger increased risk by one 1.6 times 88% stopped with a passenger, but only 50% when on cell phone Selective Inattention
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Ulric Neisser, Robert Becklen, and Daniel Cervone- basketball game with distractions Inattentional Blindness- failing to see visible objects when our atten is directed elsewhere Daniel Simons and Christopher Chabris- gorilla in a swirl of players Change Blindness- failing to notice changes in the environment Circadian Rhythm Circadian Rhythm- the biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24-hour cycle Sleep[ Stages Armond and Eugene Aserinsky- discovered REM sleep REM Sleep- 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 Alpha Waves- the relatively slow brain waves of a relaxed, awake state Sleep- periodic, natural loss of consciousness - as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation Hallucinations- false sensory experiences, such as seeing something in the absence of an external visual stimulus Hypnagogic sensations-
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