PSYC 107 1nd Edition Lecture 8 Outline of Last Lecture I What Affects Emotions II Cerebral Cortex III i Frontal Lobe ii Parietal Lobe iii Occipital Lobe iv Temporal Lobe Brain s Plasticity Outline of Current Lecture I History of Consciousness II Dual Processing III Selective Attention IV Sleep and Dreams V Measuring Sleep Current Lecture I II History of Consciousness o Psychology began as a science of consciousness o Argued to alienating consciousness from psychology o What is it Awareness of ourselves and our environment While awake there are two levels of consciousness Alert and focused Automatic processing unconscious Most of daily life is done automatic Most of life is processed with automatic processing which means less resources are used Altered Change in quality or pattern of mental activity Usually altered by drugs or hypnosis Unconscious knocked out Dual Processing These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute o III IV Information is often simultaneously processed on separate conscious and unconscious tracks Serial conscious processing Requires focused attentions Unconscious processing Does not require focused attention Selective Attention o Ability to focus on a single stimulus while excluding the other stimuli o Cocktail effect when someone calls your name you immediately focus on their voice o People who text and talk on their cell phone use increases chance of crash by 4 times While on cell phone it takes mental capacity to talk and carry on a conversation So less mental capacity is left for the use of driving o Inattentional blindness inablity to see an object in our midst Gorilla Experiment You are asked to count the number of times the basketball is passed between the white shirted players In the middle a gorilla walks through the middle of the people and most people do not realize that the gorilla is there because they are so focused on the basketball Change blindness extra reading video Sleep and Dreams o Types of biological rhythms Circadian Rhythms Circa about Diem day Natural rhythm is 25 hours if left to sleep w o stimulus most would follow a 25 hour schedule o Hypothalamus tiny section of brain that influences the glandular system Suprachiasmatic Nucleus also called SN receives cues from the environment light Light triggers the SN Tells the pineal gland to regulate melatonin cause sleepiness Increase evening Or decrease morning o Sleep Today Due to artificial light our circadian rhythms are closer to 25 hours Isolation studies People are put into bunkers and they are denied light or watches clocks The people eventually start cycling at 48 hours and all other biological cycles stop cycling i e menstrual cycles Teenagers and sleep As children enter adolescence wakefulness is delayed by one hour In terms of when they are most likely to want to wake up and start their day Changing start of school days In Minnesota delayed start times by one hour TAMU research The center for biological clock research Studies genetic basis for biological rhythms using fruit flies Investigates sleep disorders Measuring Sleep o About 90 minutes we pass through 5 distinct sleep stages o Sleep stages Non REM No eye movement less dreaming stage 4 only Stage 1 4 REM paradoxical sleep Stage 5 eye movements vivid dreaming Paradox contradiction The brain is very active but the body is paralyzed Brain stems stops the messages from the brain that says to run when we are running a marathon in our dream V Collected data Improved data Fewer tardies Fewer trips to school nurse
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