Figure 5

Normalized EEG alpha power estimated from lateral frontal electrodes AF7 and AF8. The bars represent the mean and errorbars represent the standard deviation. The statistical significance of the differences between conditions (obtained from two-sided two-sample t-tests) are also indicated. BHC: bought healthy control, BHR: bought healthy rebate, BHT: bought healthy differential tax, BUH: bought unhealthy.