Fig. 4.

α-Power predicts task performance and firing rate in MPC-left. (A) For each recording site (per session), trials were divided into five equal-sized bins on the basis of α-power level during the decision-delay period (t = 4–7 s), and average performance was computed per bin. Discrimination rate decreased with increasing α-power (P < 0.001), shown here for MPC-left. Error bars indicate the SEM. (B) Similarly, firing rate (normalized with average firing rate per recording site) decreased with increasing α-power (P < 0.001).