On the other hand, it was presented to possible applications of the eye-tracking device in educational research. In fact, there is a great is an opportunity in the analysis o cognitive process related to learning that could be better understood by using eye-tracking technology specifically by using electrooculography as suggested the comparison made with Bloom´s Taxonomy. anther area of interest that has not been fully explored is the relation between EOG system, educations, and emotions, despite briefly explore in this work, the current literature has not provided enough attention to this particular feel. Besides, It could be a great opportunity for the study of the cognitive learning processes and emotions through eye-tracking devices is the near future. Nevertheless, there are some disadvantages as point out in the previous section that need to be addresses in order to apply this type of system in an experiment that could help to gather significant conclusions and results related to the educational learning process of students.
Conclusions
From the literature review presented in this work, as well as the development process of the eye tracking device, it is possible to notice that eye tracking is a suitable technology for educational research, nonetheless, the equipment needed to perform this type of research is not accessible for many students or professors due to the image processing technology and hardware required to perform and accurate tracking of the eye. Therefore, the proposed eye-tracking device could be a solution to generate low-cost hardware and software, that can be accessible to anyone and made educational research through eye-tracking reachable. Besides, the use of machine learning techniques such as linear discriminant analysis can help to recognize basic eye movements through electrooculography with very low processing requirements in comparison with image processing methods. This makes the interface suitable to be implemented in any electronic device compatible with Python and with Bluetooth connectivity. Nonetheless, it is important to mention that is imperative to ensure the efficiency of the eye tracking device in a real setup scenario and development experience or case studies that help to this objective. Taking into account that the literature related to electrooculography as an educational research method is scarce, as future work it will be important to generate feasible study cases of the technology to gather significant data related to the usefulness of the device in different setups. One first step would be to run similar experiments like the ones shown in the presented literature and compare them with the performance of the proposed device.
Acknowledgments
The authors would like to thank the support from Tecnologico de Monterrey for the facilities given for the funding, investigation, and experimentation, as well as the financial and technical support of Writing Lab, TecLabs, and Tecnologico de Monterrey, in the production of this work.