Figure 5. Choices on a changeable three-armed bandit task and the influences on current behavior. (A) Two example predetermined reward schedules. The schedules determined whether reward was delivered for selecting a stimulus (stimulus A to C) on a particular trial. Dashed black lines represent the reversal point in the schedule when the identity of the highest value stimulus changes. (B) Average likelihood of choosing the highest value stimulus in the two schedules in the control (solid black line) and orbitofrontal cortex (OFC) groups (dashed black line). SEMs are filled gray and blue areas respectively for the two groups. Colored points represent the reward probability of the highest value stimulus. (C) Matrix of components included in logistic regression and influence of (i) recent choices and their specific outcomes (red Xs, bottom right graph); (ii) the previous choice and each recent past outcome (blue Xs, top right graph); and (iii) the previous outcome and each recent past choice (green Xs, bottom left graph), on current behavior. Green area represents influence of associations between choices and rewards received in the past; blue area represents the influence of associations between past rewards and choices made in the subsequent trials. The data for the first trial in the past in the three plots are identical. Controls, solid black lines; OFCs, dashed gray lines. From “Separable Learning Systems in the Macaque Brain and the Role of Orbitofrontal Cortex in Contingent Learning,” by M. E. Walton, T. E. Behrens, M. J. Buckley, P. H. Rudebeck, and M. F. Rushworth, 2010Neuron, 65Figures 12.