To the best of my knowledge noboty even tried to detect high gamma ca 70 Hz or higher frequencies in EEG becouse they can be contaminated with EMG. So why not to try 528 Hz (DNA mechanical vibrations) or higher frequencies. As the resonant cavity scull should resonate at ca 0.7 Ghz (20 cm wave) and may provide carrier frequency modulated with slow waves coinciding with Schumann resonance.
Einstain has said ... " life is an oscillation " so we should look for resonat frequencies.