GSTM1 and major depressive disorder: Oxy-Hb activation in the positive emotional valence for the group with healthy-low resilience was significantly higher than with healthy-high resilience (Bonferroni-corrected p < 0.05/4) (Figure 4), while oxy-Hb activation in the positive emotional valence for the group with depression-low resilience was not significantly different from that of depression-high resilience (p > 0.05).