Table 1. Association of working memory performance and cortical thickness in the placebo group.
| ROI | Coefficient | SE | Statistic | P |
|---|---|---|---|---|
| Reaction time | ||||
| Left mPFC | -0.03 | 0.13 | -0.24 | 0.811 |
| Right mPFC | -0.04 | 0.12 | -0.31 | 0.757 |
| Left DLPFC | -0.06 | 0.12 | -0.48 | 0.63 |
| Right DLPFC | -0.04 | 0.12 | -0.29 | 0.768 |
| Left PCC | 0.03 | 0.11 | 0.27 | 0.791 |
| Right PCC | -0.12 | 0.14 | -0.84 | 0.398 |
| Accuracy | ||||
| Left mPFC | 0.12 | 0.33 | 0.36 | 0.722 |
| Right mPFC | 0.07 | 0.31 | 0.22 | 0.828 |
| Left DLPFC | -0.10 | 0.29 | -0.36 | 0.717 |
| Right DLPFC | -0.36 | 0.29 | -1.25 | 0.211 |
| Left PCC | -0.05 | 0.29 | -0.18 | 0.858 |
| Right PCC | -0.14 | 0.32 | -0.44 | 0.66 |
For each region of interest (ROI), a generalized linear mixed models (GLMM) with an inverse-Gaussian error distribution and an inverse link function (same parameters as for main analyses) was set up with reaction time as outcome variable, and a logistic regression was performed with accuracy as the outcome variable. ROI and session were included as fixed effects and subject as a random intercept. The statistical parameters are t-values for GLMMS and z-scores for logistic regressions. DLPFC: dorsolateral prefrontal cortex; mPFC: medial prefrontal cortex; PCC: posterior cingulate cortex; SE: standard error.