Fig. 3.

(a) The average and standard error of ROI values in each group are shown for differential pathlength factor (DPF) and compared to a literature-reported value.³⁶ (b) The average and standard error of ${\mathrm{HbO}}_2$, Hb, THb, and ${\mathrm{O}}_2$ sat in each group are shown and compared to typically literature-reported values.^37,38