Chapter 5: Perceiving Objects. Overview of Questions. Why do some perceptual psychologists say “the whole differs from the sum of its parts”? How do “rules of thumb” help us in arriving at a perception of the environment? How do we distinguish objects from their background?
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Perceive and Classify
Figure 5.43 (a) Response of a monkey IT neuron that responds better to a 100-percent dog stimulus (red line) than to a 100-percent cat stimulus (blue) during the “sample” period of the delayed-matching-to-sample task. Other combinations of dog and cat fell between these two extremes. (b) Response of PF neurons to the same stimuli. For this neuron, the response to dog is greater during the delay and text periods. (From Freedman, D. J. et al., (2003). A comparison of primate prefrontal and inferior temporal cortices during visual categorization. Journal of Neuroscience, 23, 5235-5246.)