Fig. 5
Correlation analysis between CTQ-SF scores and relative spectral power at the forehead. (A) Pearson correlation coefficients between CTQ-SF scores and relative spectral power across the 4–20 Hz frequency band. The x-axis represents frequency (Hz), and the y-axis indicates the correlation coefficient (r). The red line represents male participants, and the blue line represents female participants. (B) Scatter plots of CTQ-SF scores versus relative spectral power at 11.9 Hz. Red dots represent male participants (r = 0.32, p = 0.043), and purple dots represent female participants (r = 0.34, p = 0.030).
