PSYC 1001, Week 3
PSYC 1001, Week 3 PSYC 1001
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This 1 page Class Notes was uploaded by Hayley Seal on Friday January 29, 2016. The Class Notes belongs to PSYC 1001 at George Washington University taught by Ramezan Dowlati in Spring 2016. Since its upload, it has received 21 views. For similar materials see General Psychology in Psychlogy at George Washington University.
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Date Created: 01/29/16
PSYC 1001 Dr. Ramezan Dowlati Class Notes for January 28 Consciousness Consciousness was the original focus of psychology, but they did not have the tools to study it extensively (only used introspection) The cognitive revolution of the 1960s was a return to the study of consciousness On average, for working people, the state of highest awareness/function is at 9:30 AM The focus of consciousness is on mental work; sensory pathways and attention span are open and working Attention is selective: consciousness is not made to capture all data, only some o Attention is the “passport” for sensory information to be processed/learned o Change “blindness” is not really blindness, just attention focused on something else Chemically-induced states of altered consciousness o Involved with addition; includes tolerance to substances and withdrawal when usage stops o Today the PC term for addiction is “substance use disorder” Sleep A cycle of sleep stages takes 90-120 minutes NREM-3 is when body temperature is very low and the body basically shuts down o Dangerous to stay in this stage too long, so it is naturally short o Difficult to wake someone in NREM-3 sleep REM is a paradoxical state of sleep because the mind is active while the body is inactive o This is the stage where dreams occur o Activation-synthesis hypothesis: dreams make sense of random activity occurring in the brain during sleep The default state of the human brain is activity o Freudian hypothesis: dreams are a form of wish-fulfillment o Cognitive development hypothesis: dreams allow information taken in during the day to be processed and understood Babies spend half of their time asleep because that is where they process all of the completely new information they receive when they are awake Infants and younger children have longer REM stages which shorten with age 8 hours of sleep can include 4 sleep cycles, 4 REM cycles, and therefore 4 dreams, but only the last dream before awakening is remembered Artificial light confuses the body’s circadian rhythm and the brain’s natural production of melatonin, which prevents sleep at night and can cause sleep deprivation Generational difference: younger generations (ex. college students) are more sleep deprived than older generations o Only time will tell the effects of long-term sleep deprivation on large populations
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