## 4 Results
### Correlation between the Human Brain and Models
#### 4.2.4 Eight Channels Located above the Parietal Lobe (Parietal)  
A total of 10 previously selected 28 EEG channels were located above the parietal lobe. The descriptive statistics for the RSA scores of the brain and the model on these 8 EEG channels are shown in Table A4. Figure 11 depicts the distribution of representational similarity between human brain activity and language models at three different TOIs for various models and fact word extraction methods using boxplots. The rhombus symbols represent outliers, indicating data points that differ significantly from other observations. The error bars represented the 95% _CI_. At the 0-1500 ms TOI, the highest RSA score of 0.00393 was observed between the human brain and the GloVE model, using the TF-IDF method for fact word extraction. At the 250-500 ms TOI, the highest RSA score reached 0.00308 for the human brain and the GPT-2 model, achieved with the Pos fact word extraction method. For the 500-1000 ms TOI, employing the Entity method for fact word extraction yielded the highest RSA score of 0.00407 with the GloVe model. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**TOI 1**} & \multirow{2}{*}{**TOI 2**} & \multirow{2}{*}{**Difference of \(M\) (1–2)**} & \multirow{2}{*}{\(p\)**} & \multicolumn{2}{c}{**95\% CI**} \\ \cline{5-6}  & & & & **Lower** & **Upper** \\ \hline \multirow{2}{*}{Overall} & N400 & \(-\)0.001 & 0.165 & \(-\)0.003 & 0 \\  & P600 & \(<\)0.001 & 1 & \(-\)0.001 & 0.001 \\ \hline \multirow{2}{*}{N400} & Overall & 0.001 & 0.165 & 0 & 0.003 \\  & P600 & \(<\)0.001 & 0.131 & 0 & 0.002 \\ \hline \multirow{2}{*}{P600} & N400 & \(<\)0.001 & 0.131 & \(-\)0.002 & 0 \\  & Overall & \(<\)0.001 & 1 & \(-\)0.001 & 0.001 \\ \hline \hline \end{tabular} Overall: 0–1500 ms; N400: 250–500 ms; P600: 500–1000 ms.  
\end{table} 
Table 9: Post-hoc test for main effects of the three TOIs on RSA scores (central). The results for the main and interaction effects from the repeated measures ANOVA are presented in Table 10. For the eight channels located above the parietal lobe, the main effects analysis results were as follows: For the three models, the sphericity assumption was not met (\(p\) = 0.012), leading to the application of the Greenhouse-Geisser correction, yielding a corrected ANOVA of \(F(1.316)\) = 8.35, \(p\) = 0.007, indicating a significant main effect of the model categories chosen on the RSA scores. For the four extraction methods, the sphericity assumption was not met (\(p\) = 0.021), necessitating the Greenhouse-Geisser correction, with the corrected ANOVA result being \(F(1.875)\) = 0.415, \(p\) = 0.652, implying the chosen fact word extraction methods did not have a significant main effect on RSA scores. The sphericity assumption was met for the TOIs (\(p\) = 0.156), resulting in an ANOVA outcome of \(F(2)\) = 3.584, \(p\) = 0.042, suggesting a significant main effect of the selected TOI on RSA scores. The interaction between the model and extraction method did not meet the sphericity assumption (\(p\) = 0.033), leading to the Greenhouse-Geisser correction and a corrected ANOVA result of \(F(3.468)\) = 2.012, \(p\) = 0.118, indicating no significant interaction. The interaction between the model and TOI did not meet the sphericity assumption (\(p\) = 0.027), leading to a corrected ANOVA of \(F(2.609)\) = 1.706, \(p\) = 0.189 after applying the Greenhouse-Geisser correction. The interaction between the extraction method and TOI did not meet the sphericity assumption (\(p\) = 0.043), resulting in a corrected ANOVA of \(F(3.382)\) = 1.066, \(p\) = 0.378 after the Greenhouse-Geisser correction. For the three-way interaction, the sphericity assumption was met (\(p\) = 0.051), leading to an ANOVA result of \(F(12)\) = 1.071, \(p\) = 0.388, implying no significant interaction. Given the significant main effects of the three models and TOIs on the RSA scores of the brain and model, post-hoc tests were conducted using the Bonferroni correction, with paired comparison results presented in Tables 10 and 11.