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psy.0124 - • Dualistic View of perception mental v...

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Psych 1 Fridlund 1/24/08 Is perception “veridical”? – do we really see what’s out there? Ex. Cube on screen, really 12 lines on the screen Vision – left to right and right to left Brain – language on left, right is music Bottom up theories – perception is an integration of tiny stimulus elements. We see then we interpret what we see. Aristotle Top down theories – perception is a strategy that determines what stimuli we seek and then integrate. What we interpret determines what we see. Plato Both are correct Start out with data and come out with perceptions Take concepts we built up and take them into the world Sensation and perception – psychophysics Psycho physic Mind(world of spirit) nature (world of things) Gustav Fechner: Elemente der Psychophysik
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Unformatted text preview: • Dualistic View of perception mental v. physical • Four basic questions of psychophysics 1. detection – “is anything there?” 2. recognition – “what is it?” 3. scaling – “much of it is there?” 4. discrimination – “are these things different?” • Absolute Limen: the weakest stimulus that can be detected reliably o Under-threshold: subliminal o Over-threshold: supraliminal • Difference Limen: the smallest difference between two stimuli that can be detected reliably • Fundamental Properties of Perception o Active process (efferent control) o Selective – if you want to feel something you can, you see what you want to see o Patterns: stimuli in context o Attention o Lateralized o Graded o Coded o Construction •...
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