910003
| Pregunta | Respuesta |
| Definition | Mental representation of real objects/events that are no longer present |
| Kosslyn's Perceptual Anticipation Theory (1) | Imagery = part of perception, involves many visual areas Cathode-ray-tube metaphor - image displayed on mental screen Quasi-pictorial representation: meaning from resemblance |
| Kosslyn's Perceptual Anticipation Theory (2) | Properties: Spatial – limited extent, specified shape, spatial relations Highest resolution in the middle Grain obscures detail on small objects (like pixilation) Begins to fade once generated |
| Propositional Account (Pylyshyn) | Images = epiphenomenal (secondary to the primary phenomena) Proposition representation (primary) e.g. has wings, beaks, lives In water, goes quack Functional space – tacit knowledge (know how things are) + medium |
| Evidence | Scanning - Learn map, image, identiy object 1 then find 2, time to complete task related to physical distance on map Scaling (Kosslyn, 1983) - Values, sizing, and detail change as you zoom in, out, around. Could be explained by functional space Neuro-evidnece (1993, Kosslyn) PET Scans - Imagery tasks activate visual cortex, activity is greater for imagery Topographic organisation |
| Kosslyn - Summary | Imagery = ‘quasi-pictorial’ mental representation of real world Images are probably represented as both propositions and image files Imagery is perception like |
| Pylyshn | Propositional Functional space (tacit knowledge + medium) |
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