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Unformatted text preview: Origins of the Mind 20:32 Lecture 2: 1/14/10 Perceiving Objects: Noticing changes and tracking objects – limit is 4 objects • We must be tracking objects that appear and disappear along a specific edge How can we identify common systems across ages and across different species?-without language for representing numbers, words for numbers, one cannot figure out how many objects to place out when asked ex. Tribe recreation of objects human adults can hold about 2-4 objects in visual memory at once, and can track about 2-4 objects at once this 3-4 item limit (called the “set-size signature ) can be used to compare cognitive abilities across ages and across species infants ability to remember objects is constrained by the set size signature thus common system of representation exists during human development non human animals ability to remember objects is constrained by the set- size signature thus common system of representation is shared with other animal members of isolated cultures can remember only 3-4 items at once Lecture 3: Space Perception 1- perception is effortless and mostly error-free-three problems with perception – must determine what retina stimuli mean as what is happening to the retina based upon what we see is the same • how are we able to figure out objects of various depths so automatically? o Depth cues Interposition – think an object is closer than another is it is covering another therefore it is in front Linear perspective – train track conception; the lines come together as they go farther Accommodation – lens will expand if an object is farther away or contract if closer to process information a certain way Convergence – eyes closer together for objects that are closer and less pointing towards each other when object is farther away • We are endowed with a special-purpose cognitive systems for interpreting these cues in the right ways o Not learned; automatic from day one as infants o Core knowledge of space; nativism • We are endowed with a general-purpose capacity to learn about our surroundings, and this learning leads us to construct appropriate interpretations of spatial cues o No core knowledge of space; empiricism The Nativist Theory of Space Perception Rene Decartes (The optics, 1647) • One of the founders of modern philosophy • Provided first distinctly modern formulation of laws of nature and conservative principle of motion • Mathematician, scientist • An observer is able to determine visual angles from information provided by the muscular responses that direct the eyes toward an object (...
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This note was uploaded on 02/06/2011 for the course PSYC 355 taught by Professor Barone during the Spring '07 term at USC.
- Spring '07
- Social Psychology