In contrast, during the task, significant activation was observed in only 22 channels for mean oxy-Hb (p-values ≤ 0.001 to 0.047, Figure S1) and in nine channels for mean deoxy-Hb (p-values ≤ 0.001 to 0.046, Figure S2) for MDD patients. The gene discussed is GSTM1; the disease is major depressive disorder.