in general: EEG beamforming is underdetermined --> needs a lot of a priori assumptions --> adding the assumption of existence of PGO waves might need to be one of them (but then, beamforming might still be helpful in localizing them in space and time)
in general: EEG beamforming is underdetermined --> needs a lot of a priori assumptions --> adding the assumption of existence of PGO waves might need to be one of them (but then, beamforming might still be helpful in localizing them in space and time)