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### Introduction The history of brain imaging has paralleled the growth of the Society for Neuroscience, from its inception in 1973 with the introduction of x-ray computed tomography (CT) to the present (for a historical review, see Webb, 19901; Kevles, 19972; Raichle, 20003; [Raichle,
Marcus E. Raichle (Wed,) studied this question.
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