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15 Cards in this Set
- Front
- Back
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sensation |
the reception of energy from the environment and its initial encoding into the nervous system |
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perception |
the process of interpreting and understanding sensory information data + knowledge = perception |
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bottom up v top down |
bottom up = data driven; info from the sensory environment top down = meaning driven; existing knowledge to process environment combo of two gives an understanding of the environment |
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inverse projection difficulty |
info received by the retina can be consistent with many different scenes |
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Location test |
temporal lobe associated with features parietal lobe associated with location discovered through lesions in these areas of the brain |
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agnosia |
impairment in recognizing objects |
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prosopagnosia |
impairment in face recognition |
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steps of feature analysis |
1. analysis stage: identifying features 2. synthesis stage: assembling features into objects bottom-up approach because analysis precedes synthesis |
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what are geons and their benefits |
building blocks of 3D objects they have view invariance (size, rotation, translation), discriminability, and resistance to visual noise |
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repetition priming |
always faster at naming an object when you have seen it before also faster when naming a complementary image bottom-up approach |
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limitations of recognition by components |
purely bottom-up other continuous properties matter, like size not good at recognizing specifics complex objects have many different combos of parts, which is better? |
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Pandemonium model modular demons |
Image - encode percept Feature - match to simple features Cognitive - recognize collection of features Decision - make final choice |
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difference between top-down and bottom-up |
bottom-up is data driven; driven by stimulus top-down is conceptual; processing driven by high level knowledge |
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Gestalt Principle |
perceptual system fills in contours that are not present in the image |
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what do visual illusions show about perception? |
size and distance are ambiguous in a 2D image perceptual system acts on a likelihood principle: which 3D image would most likely make the 2D projection |
