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Psych 101 exam 2 4-7
eye and some other vocab as well
Question | Answer |
---|---|
perception | process by which the brain organizes, identifies, interprets sensory info to form mental representation |
sensation | Awareness from stimulation of a sense organ |
transduction | specialized sensors in the body to convert physical energy into electrical energy that can be transmitted as nerve impulses to the brain |
absolute threshold | the smallest quantity that can be reliably detected by an observer |
difference threshold | smallest difference in stimulation that can be detected by an observer when 2 stimuli are detected |
sensory adaptation | sensitivity to prolonged or repetitive stimulation tends to decrease over time |
Hue | specified by color names and related to the wavelength of light |
Brightness | related to the amount of light emitted front reflected from an object |
Saturation | related to the complexity of light waves (richness) |
Cornea | protect eye and beds light towards lens |
lens | focuses on object by changing shape |
Iris | controls amount of light that gets into eye (contract/bright) (restrict/bright light) |
pupil | hole in colored part of eye, passes light to the retina |
Retina | neutral tissue lining the back of the eyeball's interior containing the receptors for vision |
Fovea | Ara of the retina where vision is clearest and there are |
rod | visual receptors that response to dim light |
cores | visual receptors involved in color vision ---poor in dim light |
Gestalt Principles | describe the brain's organization of sensory building blocks (small pieces) into meaningful units and patterns (large chunks) |
Gestalt Psychology | Before we recognize an object, the visual system performs an important grouping task to make a "whole" from a collection of separate parts |
proximity | things close to one another are grouped together 000 000 000 000000000 |
closure | the brain tends to fill in gaps to perceive complete forms ex:closed circle |
similarity | thing alike are perceived together ex. -- --- -- --- -- |
continuity | seeing continuity in lines that could be interpreted as either continuous or abruptly shifting in direction |
encoding | transform what we perceive, think, and feel into an enduring memory |
storage | the process of maintaining info in memory over time |
retrieving | process of bringing to mind info that's been previously encoded and stored |
sensory memory store | extremely brief time-a few seconds at most |
iconic memory | fast decaying store of visual info |
echoic memory | fast decaying store of auditory info |
short term memory store | 15-20 seconds, non-sensory info kept |
long-term memory store | info that can be kept for mins,hours, days, years ex: mixed up letter in class |
working memory | the active maintenance of info in short term storage, manipulates info in STM |
retrograde Amnesia | inability to retrieve information that was required before a particular point ex:Dementia and Alzheimer |
anterograde Amnesia | inability to transfer info from short-term to long-term store-can't make new memories |
bad encoding example | if you studied while drinking alcohol you'd do better taking a test while intoxicated |
good encoding example | if you study while listening to music, you would do better on test if you were listening to music then |
context effects | scuba divers rec all more words underwater if they learned the list underwater while they recall more words on land if they learned that list on land (h20) |
explicit memory | occurs when ppl consciously or intentionally retrieve past experiences |
semantic memory | facts and general knowledge ex: 1st us president. (explicit) |
episodic memory | personally experience events, allow us to travel back in time. ex: who cam to 10th bday party? (explicit) |
implicit memory | when past experiences influence later experiences without ever being aware of them |
procedural memory | you do something often enough, it can be completed without awareness (implicit) |
priming | enhanced ability to think of a stimulus as a result of recent exposure to the stimulus |
flashbulb memories | detailed recollections about when and where we heard about shocking events |
learning | a relatively permanent change in an organism's behavior due to experience |
classical conditioning | learn to associate 2 stimuli and thus to anticipate a certain behavior ex: lightning and thunder |
opperant conditioning | learn to associate a response with a consequence ex:seal and balance ball |
negative reinforcers | take away something bad ex: washing dishes |
positive reinforcers | add something good ex:cookie |
pavlov's experiements | salivating dogs |
b.f. skinner | rewarded behavior is likely to occur again |
discrimination | learned ability to distinguish btwn a CS and other stimuli that do not |
extinction | when the US does not follow the CS, CR then begins to decrease and eventually causes ___________. |
generalization | tendency to respond to stimuli similar to cs |
Watson's little albert | generalization-white animals |
shaping | a procedure in which reinforcers guide an animal's behavior towards a desired behavior thourgh successive approximations |
observational learning | monkey see monkey do |
mirror neurons | in the brains of animals and humans are active during observational learning |
bandura's experiments | indicated that children learn through imitating others who receive rewards and punishments ---bo bo doll |
what are the 3 area's of delay to autism | social,behavior,communicaton |