Amazingly, brainwave bands have octave relationships -- they are doublings of frequency. E.g., alpha at 10hz, beta around 20hz, gamma around 40hz. This allows f

Amazingly, brainwave bands have octave relationships -- they are doublings of frequency. E.g., alpha at 10hz, beta around 20hz, gamma around 40hz. This allows for neural resonances between bands. Further, the width of brainwave bands have a golden ratio relationship, where a high and low theta can independently operate without interference. The irrationality of the golden mean results in wave peaks that never meet/synchronize. This allows for multiplexing or non-interference between brainwave bands. Described in this paper, cited over 1000 times: Klimesch, W. (2012). Alpha-band oscillations, attention, and controlled access to stored information. Trends in cognitive sciences, 16(12), 606-617.