GSTM1 and Anxiety: The results showed that greater improvement in state anxiety (i.e., a larger positive ΔSAI value) was significantly correlated with increased dΔoxy-Hb in Channel 21 (r = −0.45, p = 0.01), Channel 23 (r = −0.42, p = 0.01), Channel 25 (r = −0.39, p = 0.03), and Channel 34 (r = −0.45, p = 0.01).