## 4 Discussion of Results
### General Discussion about Speech Imagery with Mental Tasks
\begin{table}
\begin{tabular}{l c c c c c c c c c c} \hline \hline \multicolumn{1}{c}{**Subject/Model**} & \multicolumn{2}{c}{**SVM**} & \multicolumn{2}{c}{**LDA**} & \multicolumn{2}{c}{**KNN**} & \multicolumn{2}{c}{**RF**} & \multicolumn{2}{c}{**TREE**} \\ \hline  & **Train** & **Test** & **Train** & **Test** & **Train** & **Test** & **Train** & **Test** & **Train** & **Test** \\ \hline S1 & 0.521 & 0.507 & 0.59 & 0.512 & 1 & 0.507 & 0.622 & 0.485 & 0.984 & 0.485 \\ S2 & 0.542 & 0.486 & 0.608 & 0.535 & 1 & 0.521 & 0.606 & 0.503 & 0.983 & 0.485 \\ S3 & 0.507 & 0.500 & 0.553 & 0.499 & 1 & 0.479 & 0.639 & 0.532 & 0.978 & 0.499 \\ S4 & 0.539 & 0.479 & 0.548 & 0.487 & 1 & 0.528 & 0.579 & 0.524 & 0.99 & 0.438 \\ S5 & 0.521 & 0.507 & 0.565 & 0.526 & 1 & 0.479 & 0.632 & 0.528 & 0.983 & 0.555 \\ Avg & 0.521 & 0.496 & 0.573 & 0.512 & 1 & 0.503 & 0.616 & 0.514 & 0.983 & 0.492 \\ \hline \hline \end{tabular}
\end{table} 
Table 28: FBCNN on five different models run and updated with PSO. extracting semantic information. Unlike stroke writing, lip and language synchronization are also learned for short-term learning and may be processed by a wide range of cortical areas. The motor cortex region has low task efficiency. Despite slight changes in body movement, EEG signals from lip synchronization are appropriate. This is similar to a BCI based on motion pictures that include imagined movements of the right hand, left hand, tongue, and foot. The upper parietal lobule was associated with image rotation. It is possible to clearly distinguish EEG signals from different areas. There is a clear difference between the results for these two issues. It is based on the different educational backgrounds of individuals and their understanding of the experimental tasks. Therefore, instructors perform different mental tasks. The differentiating characteristic is that the power spectra of the EEG signals in the cortical wall are significantly different. These models are able to complete all of the original sounds. Each language can then use a base model for communication. These are easy to model. With the proposed method, imagination can last for a long time without further fatigue, and the appropriate model can be selected for a certain region and language. Previous studies [106; 107] have investigated cortical activity and number classification performance during tactile imaging (TI) of a vibrating stimulus in the index, middle, and thumb fingers of the left hand in healthy subjects. In addition, the cortical activity and classification performance of the TI combination with the same mixed motor imagery (MI) were compared with the same TI figures in the same subjects. The results of this study demonstrate that tactile composite images can be a suitable alternative to MI for BCI classification. This study contributes to the growing evidence supporting the use of TI in BCI applications, and future research can build on this work to explore the potential of a TI-based BCI for motor rehabilitation and the control of external devices. Our goal is communication based on lip reading, which is a general task for communication. This method was first studied using an MI. In addition, the TI method can be used for verification. This method can be easily implemented and used in practical applications. However, further research in this field is required. Some of the new methods presented can lead to the quick realization of this method for future communication.