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Cover picture:
A popular diversion in 17th century
France as well as today, dice games inspired Blaise
Pascal to define expected value as the product of the
potential magnitude and probability of a valued
outcome. Panels in the rolling dice shown depict
mesolimbic regions (i.e., the midbrain, nucleus
accumbens, and mesial prefrontal cortex), the activity
of which correlates with the expected value of
monetary outcomes, measured in humans
undergoing event-related functional magnetic
resonance imaging. To discover which of these
regions shows sensitivity to magnitude versus
probability terms, see the article by Knutson et al. in
the May 11, 2005 issue (pages 4806-4812).
Image credit: Jamil Bhanji.
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