GSTM1 and schizophrenia: The mean oxy-Hb levels during the task period were significantly higher than the pre-task baseline for 37 channels (ch2, ch9, ch12, ch13, ch15, ch19 to ch26, ch28 to ch30, and ch32 to 52; 52-channel FDR-corrected p < 0.05) in participants with schizophrenia.