## 3 Results  
In the SSQ, the following factors were significantly higher after VR than before VR: nausea (\(16.218\pm 21.133\) vs. \(47.064\pm 31.684\), \(p<0.001\)), oculomotor symptoms (\(29.562\pm 23.750\) vs. \(67.715\pm 36.103\), \(p<0.001\)), disorientation (\(25.056\pm 35.517\) vs. \(101.152\pm 66.801\), \(p<0.001\)), and total score (\(12.332\pm 13.854\) vs. \(41.044\pm 24.779\), \(p<0.001\)). This result is presented in Table 1.  
In the eyes open condition, the rmANOVA for frequency band power showed significant main effects of time and brain region in theta (\(F=4.879\), \(df=1.872\), \(p=0.013\)), alpha1 (\(F=8.065\), \(df=1.112\), \(p=0.006\)), alpha2 (\(F=9.317\), \(df=1.201\), \(p=0.003\)), and beta1 (\(F=4.988\), \(df=2.014\), \(p=0.010\)) frequency bands. In the post hoc analysis, we did find significant differences in the theta, alpha1, alpha2, and beta bands. Specifically, the alpha1 band power was significantly higher after VR than before VR in the following segments: middle (\(2.703\pm 2.542\) vs. \(3.526\pm 3.453\), \(p=0.002\)), posterior (\(5.689\pm 5.595\) vs. \(9.025\pm 10.547\), \(p=0.004\)), and global (\(4.097\pm 3.960\) vs. \(6.055\pm 6.942\), \(p=0.004\)). The alpha2 band power was significantly higher after VR than before VR in the following segments: anterior (\(4.533\pm 4.672\) vs. \(5.627\pm 5.697\), \(p=0.006\)), posterior (\(7.695\pm 8.202\) vs. \(9.943\pm 9.856\), \(p=0.003\)), and global (\(4.999\pm 5.003\) vs. \(6.233\pm 5.951\), \(p=0.003\)). This result is presented in Table 2. \begin{table}
\begin{tabular}{l c c c c} \hline \hline \multirow{2}{*}{**SSQ Score**} & \multicolumn{2}{c}{**Before VR**} & \multicolumn{2}{c}{**After VR**} & \multirow{2}{*}{\(\mathbf{t}\)} & \multirow{2}{*}{\(\mathbf{p}\)} \\ \cline{2-2} \cline{5-5}  & \multicolumn{2}{c}{**Mean \(\pm\) SD**} & & \\ \hline Nausea & \(16.218\pm 21.133\) & \(47.064\pm 31.684\) & \(-5.877\) & \(<\)0.001 \\ Oculomotor & \(29.562\pm 23.750\) & \(67.715\pm 36.103\) & \(-7.771\) & \(<\)0.001 \\ Disorientation & \(25.056\pm 35.517\) & \(101.152\pm 66.801\) & \(-8.576\) & \(<\)0.001 \\ Total & \(12.332\pm 13.854\) & \(41.044\pm 24.779\) & \(-8.904\) & \(<\)0.001 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Differences in simulator sickness questionnaire (SSQ) scores before and after watching a video. \begin{table}
\begin{tabular}{l c c c c} \hline \hline  & \multicolumn{2}{c}{**Before VR**} & \multicolumn{2}{c}{**After VR**} & \multirow{2}{*}{\(\mathbf{t}\)} & \multirow{2}{*}{\(\mathbf{p}\)} \\ \cline{2-2} \cline{5-5}  & \multicolumn{2}{c}{**Mean \(\pm\) SD**} & & \\ \hline
**Delta** & & & & \\ Anterior & \(17.455\pm 6.010\) & \(17.261\pm 8.124\) & \(0.150\) & \(0.882\) \\ Middle & \(7.202\pm 3.145\) & \(7.212\pm 2.789\) & \(-0.017\) & \(0.986\) \\ Posterior & \(8.844\pm 3.202\) & \(9.061\pm 3.608\) & \(-0.637\) & \(0.529\) \\ Global & \(10.314\pm 3.320\) & \(10.463\pm 3.934\) & \(-0.251\) & \(0.804\) \\
**Theta** & & & & \\ Anterior & \(6.027\pm 2.612\) & \(7.017\pm 4.444\) & \(-2.544\) & \(0.017\) \\ Middle & \(3.550\pm 1.762\) & \(4.076\pm 2.884\) & \(-2.237\) & \(0.033\) \\ Posterior & \(4.312\pm 2.547\) & \(5.467\pm 4.779\) & \(-2.661\) & \(0.013\) \\ Global & \(4.477\pm 2.234\) & \(5.380\pm 3.967\) & \(-2.649\) & \(0.013\) \\
**Alpha1** & & & & \\ Anterior & \(3.976\pm 3.957\) & \(5.764\pm 7.507\) & \(-2.559\) & \(0.016\) \\ Middle & \(2.703\pm 2.542\) & \(3.526\pm 3.453\) & \(-3.409\) & \(0.002\) \\ Posterior & \(5.689\pm 5.595\) & \(9.025\pm 10.547\) & \(-3.106\) & \(0.004\) \\ Global & \(4.097\pm 3.960\) & \(6.055\pm 6.942\) & \(-3.103\) & \(0.004\) \\
**Alpha2** & & & & \\ Anterior & \(4.533\pm 4.672\) & \(5.627\pm 5.697\) & \(-2.991\) & \(0.006\) \\ Middle & \(2.991\pm 2.684\) & \(3.420\pm 2.860\) & \(-2.381\) & \(0.024\) \\ Posterior & \(7.695\pm 8.202\) & \(9.943\pm 9.856\) & \(-3.248\) & \(0.003\) \\ Global & \(4.999\pm 5.003\) & \(6.233\pm 5.951\) & \(-3.233\) & \(0.003\) \\ \hline \hline \end{tabular}
\end{table}