Table 2.
Correlations between the proportion of hard-task choices in low-probability trials and indicators of cortical asymmetry (n = 51)
| Indicator of cortical asymmetry (Homologous electrode pair) | Correlation with hard choice % at low probability (Pearson’s r) |
|---|---|
| Homologous electrode pair | |
| Frontal (F4–F3) | 0.42* |
| Frontal (F6–F5) | 0.43* |
| Medial (C4–C3) | 0.20 |
| Medial (C6–C5) | 0.12 |
| Posterior (P4–P3) | 0.12 |
| Posterior (P6–P5) | 0.08 |
| Frontal EEG frequency band | |
| Theta (4–7 Hz) | 0.32** |
| Low alpha (8–10 Hz) | 0.47* |
| High alpha (10.25–12.75 Hz) | 0.35*** |
| Beta (13–30 Hz) | 0.27 |
NB: *P < 0.001, **P = 0.021, ***P = 0.015