Ventromedial prefrontal cortex (VMPFC) beta band synchronisation reflects value difference on harder ‘comparison’ trials, but not on ‘sequential’ trials.

<p>(A) Correlates of the value difference between chosen and unchosen options, timelocked to the response, on harder comparison trials. Color represents T-statistic; bordered areas reflect significant clusters (cluster-corrected P<0.05; permutation test). (B) As (A), but for ‘nobrainer’ trials in which probability and magnitude advocated the same response. (C) Correlates of the value difference between chosen and unchosen options, timelocked to option 2 presentation, on harder sequential trials. (D) Separating the VMPFC beta band response on harder comparison trials reveals a positive correlate of the value of the chosen option (blue) and a negative correlate of the value of the unchosen option (red) prior to the response. Bars represent mean +/− 95% confidence intervals across subjects. (E) As (D), but for ‘nobrainer’ trials. (F) Separating the beta band response on harder sequential trials reveals no correlate of either chosen or unchosen value in VMPFC at the time of option 2 presentation.