large millivolt data values / FbEEG Full Band EEG
Comparison of two picures demonstrated that Alpha wave had been detected. So, I thought that experimental setup was fine.
However, I got raw data as the attached picure (Third column). What's problem? They were minus values all time. (Sample values ranged from -27407 to -27504 microvolts. About a hundred microvolt range, but with a -27400 constant offset.) Any suggestion, please?