That is a good point. According to this publication: "Publication recommendations for electrodermal measurements", it is pretty common to use DC for gsr, but that AC may be preferable, because the polarization issue with the DC can cause drift in the signal.
I will be using measurements of...
I am collecting skin conductance data for a research study. For this, we apply a constant voltage (5v) to a participants finger and then measure the voltage at another finger (or I think this is what is happening, there is also something about a resistor in there [see attached schematic])...