1. Marosi, E., Bazán, O., Yañez, G., Bernal, J., Fernández, T., Rodríguez, M., Silva, J., Reyes, A.: Narrow-band spectral measurements of EEG during emotional tasks. Int. J. Neurosci. 112(7), 871–891 (2002)
2. Lutsyuk, N., Éismont, E., Pavlenko, V.: Correlation of the characteristics of EEG potentials with the indices of attention in 12-to 13-year-old children. Neurophysiology 38(3), 209–216 (2006)
3. Berka, C., Levendowski, D.J., Lumicao, M.N., Yau, A., Davis, G., Zivkovic, V.T., Olmstead, R.E., Tremoulet, P.D., Craven, P.L.: EEG correlates of task engagement and mental workload in vigilance, learning, and memory tasks. Aviat. Space Environ. Med. 78(5 Suppl), B231–B244 (2007)
4. Baker, R., D’Mello, S., Rodrigo, M.M., Graesser, A.: Better to be frustrated than bored: The incidence, persistence, and impact of learners’ cognitive-affective states during interactions with three different computer-based learning environments. International Journal of Human-Computer Studies 68(4), 223–241 (2010)
5. NeuroSky: NeuroSky’s eSenseTM Meters and Detection of Mental State. Neurosky, Inc. (2009)