Baseline correction

The baseline correction is useful for signals, that are evaluated relative to a preceding comparison interval, like SCRs for example. ANSLAB subtracts the mean of the signal during the defined baseline interval from all points of the signal, pulling it to the zero line. This correction never really changes the data itself or the loaded file, it merely is calculated shortly before display to allow comparisons of signals that have an absolute offset, that is not of interest.

Activate the baseline correction in the view-section of ANSLAB command window and enter baseline start and end time (in ms) relative to file begin. Note that baseline activation is signal specific, like all other display options. Thus if you are displaying multiple channels and activate baseline correction, only the currently active signal is baseline corrected. If a baseline correction is active, the baseline interval is plotted on blue background in the data window. An example of a baseline corrected IBI signal is shown below.