An apparatus for the measurement of galvanic skin response
Peredur M Williams · Journal of Scientific Instruments · 1967
An apparatus is described which enables changes in resistance that are a very small fraction of the total (ΔR/R < 0.01) to be measured and recorded automatically. Both a.c. and d.c. measurements can be made under constant current conditions. Low voltage battery operation makes the apparatus portable and safe for operation by unskilled personnel.