EEG DC Detrend Analyzer

The DC Detrend transform calculates the DC trend from the EEG signal. The average voltage is

calculated for each prestimulus interval of the specified marker type. In a second step, the average

voltage is calculated for every DC reset in an interval directly before the DC reset. In a third step,

all average values calculated for the prestimulus intervals along the time axis and corrected by adding

the offset are taken into account, and the trend is calculated by applying linear regression to this data.