FIGURE 2.

Sleep-dependent consolidation of rewarded behavior. The line graphics on the left side depict the relative frequencies of correct choices of the target islands. Encoding refers to the last thirds of the learning blocks prior to the retention intervals. After the retention intervals, the reinforcement schedule is reversed and the formerly “correct” islands become “wrong” and vice versa. Reversal refers to the first five trials of the reversal block after the retention interval. The bar graph on the right side depicts the difference of reversal and encoding. Larger negative values indicate a consolidation of the learned preferences, i.e., consolidation of rewarded behavior. The bars represent means ± standard error of means. ADHD, attention deficit hyperactivity disorder.