Fig. 2.

The scalp maps for delta (1–4 Hz) and gamma (35–45 Hz) bands are displayed with meditation on the left and control task on the right. Both bands showed a statistically significant difference comparing meditation and control states and the scalp map indicating statistical significance is shown below. Statistical significance was determined using bootstrap statistics with false detection rate (FDR) correction for multiple comparison with the threshold significance set at P < 0.05, indicating bilateral frontal decreases in delta power (significant at F3, F4, F7, F8, C3, and C4) and parieto-occipital increases in gamma power (significant at P7, P8, O1, and O2) as meditation state effects. Similar analyses run on the theta, alpha, and beta bands indicated no statistical differences between states at any scalp site and are thus not shown