Psych: Chapter 4 notes
Psych: Chapter 4 notes PSY 1113
Collin County Community College District
Popular in Elements of Psychology
Popular in Psychlogy
This 3 page Class Notes was uploaded by elzbietaag on Monday October 5, 2015. The Class Notes belongs to PSY 1113 at University of Oklahoma taught by Jenel Cavazos in Fall 2015. Since its upload, it has received 11 views. For similar materials see Elements of Psychology in Psychlogy at University of Oklahoma.
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Date Created: 10/05/15
0 Sensation and perception gt Sensation the activation of sense organs by a stimulus Light waves sound waves skin pressure 0 72 degrees Everyone feels 72 degrees 0 Same level of spicy gt Perception the interpretation analysis and integration of stimuli Assigning meaning 0 It s cold in herequot 0 quotThat s so spicyquot gt Can sensation and perception exist without one another gt Synesthesia a neurologically based condition in which stimulation of one sensory or cognitive pathway leads to automatic involuntary experiences in a second sensory or cognitive pathway Mr Burke gt Phantom Limb the sensation that an amputated or missing limb or organ is still attached to the body and is moving appropriately with other body parts When you feel a limb that s not there 0 Topdown and bottomup processing gt According to research at Cambridge University it doesn t matter in what order the letters in a word are the only important thing is that the rst and last letter be at the right place The rest can be a total mess and you can still read it without problem This is because the human mind doesn t read every letter by itself but the word as a whole gt Topdown processing using an understanding of the quotbig picturequot to reason about the individual pieces You don t need to know every letter you just see the whole thing Looking at the word itself When you re playing chess and you just glance at the board and you know what they layout it gt Bottomup processing using individual pieces of information to make sense of the big picturequot Learning how to read by sounding it out You don t know the whole picture yet Look at the letters to create the word Just look at the chess board and need to gure everything out square my square 0 Sensation and perception gt Absolute threshold the smallest intensity of a stimulus that must be present in order for it to be detected 50 of the time smallest thing we could perceive Vision a candle ame at 30 miles on a dark clear night Hearing a ticking clock at 20 feet under quiet conditions Smell one drop of perfume diffused throughout three rooms Taste a teaspoon of sugar in 2 gallons of water Touch the wing of a y falling on your neck from a distance of 1 centimeter gt Difference thresholds Difference threshold just noticeable difference smallest level of change in a stimulus that can be detected Weber s law the just noticeable difference is a constant proportion of the intensity of the initial stimulus Constant proportion Subliminal perception gt Subliminal perception the detection of information below the level of conscious awareness gt Subliminal presentation can have an effect Small subtle Shortterm 0 Attention and perception gt Selective attention focusing on a speci c aspect of experience while ignoring others Cocktail party effect ability to focus on one voice among many Stroop effect overriding automatic perception can t not read 0 When you re at a party and someone says your name and you hear it over everything that s going on around you lnattentional blindness failure to detect unexpected events when attention is engaged by another task Change blindness failure to detect changes In the environment Divided attention dividing mental attention among tasks 0 Limited capacity for storing and processing information Sensory Adaptation gt Adaptation an adjustment in sensory capacity after prolonged exposure to unchanging stimuli gt Receptors are sensitive to change not constants gt Why
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