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Reward Optimization in the Primate Brain: A Probabilistic Model of Decision Making under Uncertainty
Figure 5
Effect of 
on speed-accuracy tradeoff.
(a) Model predictions of psychometric and chronometric functions for different values of 
. (b) Comparison of model predictions and experimental data for different speed-accuracy regimes. The black dots represent the response time and accuracy of a human subject in the direction discrimination task under normal speed conditions, while the red crosses represent data with a slower speed instruction. The model predictions are plotted as black solid curves (with 
) and red dashed lines (
), respectively. The per-step duration and non-decision residual time are fixed to be the same for both conditions: 
ms/step, and 
ms. Human data are from human subject LH in [33].
doi: https://doi.org/10.1371/journal.pone.0053344.g005