Slide 15 of 25
Notes:
When this version of the picture is perceived, it becomes clear that we are looking at a well-known object. Looking back at the previous two slides makes clear that there has been some change as a result of this experience. Similar changes could be induced by other cues that are perceptually unrelated to the picture shown on this slide.
On the next slide we take a look at another aspect of the standard model of perception. If perception were dependent primarily on the stimulus, then we would still need a method for classifying percepts together. Similarity is traditionally taken as the basis for that method. The next slide shows that similarity is not a solid basis on which to build, because, like perception, similarity also depends heavily on context and on other factors, not just the stimulus properties itself.
If perception relies so heavily on nonperceptual sources of information, then it can hardly be adequate to be basis of memory. Memory cannot just be a copy of perception because perception itself is inadequate and depends heavily on memory for its own occurrence. We are left with an uncomfortable circularity.
