I think that I collected galvanic skin data using a high pass filter. The waveform looks like white noise. If this is the case, can I still get skin conductance levels? I'm using a BioPac 150 system. with AcqKnowledge software.
if you can use the data at all will depend on the exact filter characteristics (which was the cut-off frequency - if it was too high than not much information is left...).
Further, even depending on the filetr charcteristics, not all analyses will be possible using the filtered data (probably you will only be able to analyze the phasic component).