References

1. Al-Fahoum, A. S., & Al-Fraihat, A. A. (2014). Methods of EEG signal features extraction using linear analysis in frequency and time-frequency domains. International Scholarly Research Notices, 2014.
2. Ahirwal, M. K., & Londhe, N. (2012). Power spectrum analysis of EEG signals for estimating visual attention. International Journal of computer applications, 42(15), 22-25.
3.Sałabun, W. (2014). Processing and spectral analysis of the raw EEG signal from the MindWave. Przeglad Elektrotechniczny, 90(2), 169-174.
4.Ktonas, P. Y., & Gosalia, A. P. (1981). Spectral analysis vs. period-amplitude analysis of narrowband EEG activity: a comparison based on the sleep delta-frequency band. Sleep, 4(2), 193-206.
5.  https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/power-spectrum