The influence of salivary cortisol level on MEP suppression after cTBS. A, B, Cortisol levels tended to be lower with reduced GA (A), but there was no association with BW% (B). Data are results from individual subjects. C, Adolescents with low cortisol levels immediately before cTBS showed very little neuroplastic change in mean MEP following cTBS. Data are individual mean MEP amplitudes (expressed relative to baseline; i.e., 100%) during the 60 min follow-up after cTBS.