Supporting Materials and Methods

Fig. S1. Two example neurons showing the discharges at the time of target button release following the feedback beeps.

Fig. S2. Activity of Searchpre-feedback and Repeatpre-feedback neurons in monkey TN.

Fig. S3. Comparison of the adjusted R2 values among the three models during the pre-feedback period.

Fig. S4. Averaged activities of neurons reflecting the negative-then-search and positive-then-repeat strategy.

Table S1. Values of each variable used in the multiple regression analysis.

Table S2. Correlation matrix among variables defined during the multi-step choice task.

Table S3. Number of neurons with distinct discharge properties defined using multiple regression analysis in each task period.

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