TUES, MAY 17, 2022-

 Remarkable Inconsistency of EEG Frequency Band Definitions

    QUOTE:

 Defining the power spectrum in terms of different ranges named delta, theta, alpha, beta and gamma forms a fundamental framework in the EEG literature today.  

Yet these band definitions have a shockingly wide variability in the literature.

Since the 1930s, when frequency oscillations were first measured by Hans Berger, researchers have typically analyzed the EEG power spectrum by slicing it into a small number of frequency “bands”. These predefined spectral windows have been given the labels of delta, theta, alpha, beta, and gamma, moving from the lower to the upper end of the spectrum respectively. The bands were initially defined based on constraints of technology and analysis of the 1930s. They were then perpetuated by the mechanical band pass filters developed by individuals such as William Walter Grey and Edmund Kaiser

 (see Down a Rabbit Hole? A History of EEG Analysis) to simplify the analysis of the power spectrum, and continue to prevail today in modern EEG research

https://sapienlabs.org/lab-talk/the-remarkable-inconsistency-of-frequency-band-definitions/

The Remarkable Inconsistency of EEG Frequency Band Definitions

archived  here: https://archive.ph/DKGSK