... also in the fusiform gyrus. Subsequent PET studies (which imaged a larger portion of the brain) confirmed the activation in the fusiform gyrus, while also noting activation in the right inferior frontal gyrus, an area previously associated through lesion studies with visual memory. The nature of visual object representation in the brain is the subject of a prolonged debate. One set of theories asserts that objects are represented by their structural description and the representation is ''object-cantered.'' Theories from the other side of the debate suggest that humans store multiple ''snapshots'' for each object, depicting it as seen under various conditions, and the representation is therefore ''viewer-cantered.'' The principal tool that has been used to support and criticize each of these hypotheses is subjects' performance in recognizing objects under novel viewing conditions. For example, if subjects take more time in recognizing an object from an unfamiliar viewpoint, it is common ...

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