![]() ![]() Our findings also show how the process of choice is distributed throughout the brain and that the activation of different functional units is sensitive to minute differences in environmental conditions, in particular the structure of comparison lotteries. This study unequivocally indicates that, in humans, choice behavior alone does not reveal completely how choices are made. Thus, very different neuro-physiologic processes appear to govern similar choice behavior. We demonstrate that although choice behavior is relatively insensitive to the type of reference lottery, the case is dramatically different for response times and neuronal activation: these two strongly depend on it. In one condition the reference lottery was risky in the other condition it was certain: that is, the outcome won or lost was fixed. We manipulated the nature of one of the two lotteries (called the reference lottery) in a choice task between pairs of lotteries. We study behavioral and neuronal responses associated with economic choices.
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