Compared with the TD group, Δavg oxy-Hb changes in subjects with ADHD were shown to be significantly lower in both right and left DLPFC compared to the TD group (ADHD vs. TD, right DLPFC t = −2.364, p < 0.05; left DLPFC t = −2.301, p < 0.05), as shown in Figure 3. Here, GSTM1 is linked to attention deficit-hyperactivity disorder.