Figure 3
Results of logistic regression analysis.
Effects of actual and fictive rewards in the previous three trials on the rat's current choice were examined by performing a trial-by-trial analysis of rat's choices using a logistic regression model. A positive (or negative) coefficient indicates that the animal's past and current choices tended to be the same (or different). Error bars, standard errors of the coefficient estimates. The animals tended to repeat the same goal choice (stay) as the magnitude of the actual reward in the previous trial (t-1) increased (positive coefficients for actual reward for t-1 trials), whereas they tended to switch their choice as the magnitude of the fictive reward in the previous trial (t-1) increased (negative coefficients for fictive reward for t-1 trials). Mean, regression coefficients were averaged across animals (mean ± SEM; error bars are too small to see). Filled symbols denote statistical significance (p < 0.05).
