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 researchers in Germany who recognized the danger of artifact from any kind of movement at all and used special techniques to identify and screen it out.

0.1 Hz means that your heart is pulsing 1/10 of a time per second–or 6 beats per minute.  So 0.01 Hz would be a heart rate of 0.6 per minute or one heartbeat every 10 minutes.  Good luck with that. A heartrate of 60/minute, for an athlete in top condition and resting would be 1 Hz.