## 3 Results
### Patient Monitoring System  
The HR values were 77.67 \(\pm\) 7.95, 74.58 \(\pm\) 7.96, 79.65 \(\pm\) 8.21, and 80.01 \(\pm\) 8.14 in C1-C4, respectively (Table 5). Although it decreased in C2 vs. C1, the HR increased in C3 and then again in C4. Significant differences were observed in the comparisons of concentrations for C1 vs. C2, C1 vs. C3, C1 vs. C4, C2 vs. C3, and C2 vs. C4 (\(p\) < 0.05) but not for C3 vs. C4 (\(p\) = 0.907).  
The SpO\({}_{2}\) values were 97.78 \(\pm\) 0.94, 98.64 \(\pm\) 0.54, 98.47 \(\pm\) 0.63, and 98.71 \(\pm\) 0.76 in C1-C4, respectively (Table 6), showing an increasing pattern in the order of C1, C3, C2, and  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Region** & **Condition** & **Mean \(\pm\) SD** & **F** & \(p\) & **Factor 1** & **Factor 2** &
\begin{tabular}{c} **Mean Difference \(\pm\) SE** \\ **(Factor 1-Factor 2)** \\ \end{tabular} & **t** & \(P_{\text{Thkey}}\) \\ \hline \multirow{4}{*}{Left} & \#1 & \(-0.004\)\(\pm\) 0.014 & & & \#2 & \(-0.0014\)\(\pm\) 0.0023 & \(-0.62\) & 0.926 \\ \cline{3-10}  & \#2 & \(-0.002\)\(\pm\) 0.022 & & & & \#3 & \(-0.0135\)\(\pm\) 0.0034 & \(-4.02\) & 0.003 \({}^{*}\) \\ \cline{3-10}  & \#3 & \(-0.002\)\(\pm\) 0.022 & & & & \#4 & \(-0.0220\)\(\pm\) 0.0044 & \(-4.99\) & \(<\)0.001 \({}^{*}\) \\ \cline{3-10}  & \#4 & \(0.018\)\(\pm\) 0.024 & & & & \#3 & \(-0.0121\)\(\pm\) 0.0033 & \(-3.63\) & 0.008 \({}^{*}\) \\ \cline{3-10}  & & & & & \#2 & \(-0.0206\)\(\pm\) 0.0046 & \(-4.51\) & 0.001 \({}^{*}\) \\ \cline{3-10}  & & & & & \#3 & \#4 & \(-0.0085\)\(\pm\) 0.0023 & \(-3.64\) & 0.008 \({}^{*}\) \\ \hline \multirow{4}{*}{Right} & \#1 & \(-0.008\)\(\pm\) 0.010 & & & & \#2 & \(-0.0025\)\(\pm\) 0.0019 & \(-1.34\) & 0.550 \\ \cline{3-10}  & \#2 & \(-0.005\)\(\pm\) 0.011 & & & & \#3 & \(-0.0141\)\(\pm\) 0.0047 & \(-2.99\) & 0.031 \({}^{*}\) \\ \cline{3-10}  & \#3 & \(0.006\)\(\pm\) 0.024 & & & & \#4 & \(-0.0209\)\(\pm\) 0.0056 & \(-3.74\) & 0.005 \({}^{*}\) \\ \cline{3-10}  & \#4 & \(0.013\)\(\pm\) 0.027 & & & & \#2 & \(-0.0184\)\(\pm\) 0.0050 & \(-3.71\) & 0.006 \({}^{*}\) \\ \cline{3-10}  & & & & & \#3 & \(\#4\) & \(-0.0068\)\(\pm\) 0.0026 & \(-2.60\) & 0.070 \\ \cline{3-10} \cline{3-10}  & & & & & & \#3 & \(-0.0141\)\(\pm\) 0.0047 & \(-2.99\) & 0.031 \({}^{*}\) \\ \cline{3-10}  & & & & & & \#4 & \(-0.0209\)\(\pm\) 0.0056 & \(-3.74\) & 0.005 \({}^{*}\) \\ \cline{3-10}  & & & & & & & \#3 & \(-0.0116\)\(\pm\) 0.0040 & \(-2.93\) & 0.035 \({}^{*}\) \\ \cline{3-10}  & & & & & & \#2 & \(-0.0184\)\(\pm\) 0.0050 & \(-3.71\) & 0.006 \({}^{*}\) \\ \cline{3-10}  & & & & & & \#3 & \(\#4\) & \(-0.0068\)\(\pm\) 0.0026 & \(-2.60\) & 0.070 \\ \hline \hline \end{tabular}
\end{table}
Table 4: Comparison of HbT concentrations in the left and right frontal lobes using RM ANOVA.  
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Condition** & **Mean \(\pm\) SD** & **F** & \(p\) & **Factor 1** & **Factor 2** &
\begin{tabular}{c} **Mean Difference \(\pm\) SE** \\ **(Factor 1-Factor 2)** \\ \end{tabular} & **t** & \(P_{\text{Thkey}}\) \\ \hline \multirow{4}{*}{\#1} & 77.67 \(\pm\) 7.95 & & & & \#2 & 3.08 \(\pm\) 0.75 & 4.09 & 0.002 \({}^{*}\) \\ \cline{3-10}  & 77.67 \(\pm\) 7.95 & & & & \#1 & \#3 & \(-1.98\)\(\pm\) 0.55 & \(-3.61\) & 0.006 \({}^{*}\) \\ \cline{3-10}  & \#2 & 74.58 \(\pm\) 7.96 & & & \#4 & \(-2.34\)\(\pm\) 0.76 & \(-3.10\) & 0.021 \({}^{*}\) \\ \cline{3-10}  & \#3 & 79.65 \(\pm\) 8.21 & & & \#3 & \(-5.06\)\(\pm\) 0.70 & \(-7.23\) & \(<\)0.001 \({}^{*}\) \\ \cline{3-10}  & \#4 & 80.01 \(\pm\) 8.14 & & & \#2 & \(\#4\) & \(-5.42\)\(\pm\) 0.74 & \(-7.32\) & \(<\)0.001 \({}^{*}\) \\ \cline{3-10}  & & & & & \#3 & \(-0.36\)\(\pm\) 0.54 & \(-0.67\) & 0.907 \\ \hline \hline \end{tabular}
\end{table}
Table 5: Comparison of HR using RM ANOVA.