Frequencies Below 1 Hz Any EEG value below 1 is not AC EEG that we train.  It’s DC. It’s not produced in the cortex, nor even in the brain’s subcortical areas, as are the AC frequencies.  It appears to be a signal from the brainstem.  The published research that’s been done, or at least what I’ve seen, has been done on Slow Cortical Potentials (SCP) which range from about .3 to about .8 Hz, and it was done by serious […]