Fig. 5.

Sham-subtracted tPBM-induced prefrontal (a) $\mathrm{\Delta }{\mathrm{bCON}}_{\mathrm{HbO},\mathrm{SS}}$ and (b) $\mathrm{\Delta }{\mathrm{bCON}}_{\mathrm{CCO},\mathrm{SS}}$ for different tPBM conditions, namely, R800, L800, R850 at endogenic (E; 0.005 to 0.02 Hz), neurogenic (N; 0.02 to 0.04 Hz), and myogenic (M; 0.04 to 0.2 Hz) frequency bands. Error bars represent the standard error of the mean ($n=26$). *: $p<0.05$, **: $p<0.01$ obtained from one-sample $t$-tests.