In the patients with schizophrenia, the 5-sec [oxy-Hb] slope and mean [oxy-Hb] change were also not significantly correlated with any potential confounding factors (age, education, premorbid IQ, task performance, PANSS scores, chlorpromazine equivalent dose, biperiden equivalent dose, and diazepam equivalent dose) at any channel (Pearson's correlation coefficient: p>FDR 0.05). The gene discussed is GSTM1; the disease is schizophrenia.