Assertion: dopamine's function | /r/HasProperty | signaled by dopamine neurons
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text: The particular function of uncertainty signaled by dopamine neurons is not known (13), but we note that common measures of uncertainty (variance, standard deviation, and entropy) are all maximal at P = 0.5 and have highly nonlinear relations to probability, being very sensitive to small changes in probability near the extremes (P = 0 or 1).