There are several aspects of the EDA that one can measure:

* SC = Skin conductance. Measured in microsiemens or micromhos (the reciprocal of resistance, ohm)
* SCL = tonic changes in SC
* SCR = phasic changes in SC
* NS-SCR = SCRs that occur without any identifiable eliciting sitmulus
* ER-SCR = SCR that is evoked by a specific eliciting stimulus

• Introduction to electrodermal activity
• A Guide for Analysing Electrodermal Activity (EDA) & Skin Conductance Responses (SCRs) for Psychological Experiments
  
• Electrodermal activity measurements
  
• Biopac Electrodermal Response Basics
  
• EDA (GSR) subject preparation
  
• Guidelines for GSR, EDA, EDR, SCL, and SCR

• Power on the MP150
• Ensure that the EDA100C (Electrodermal Activity) amplifier is attached and set to channel #3

1. Connect two LEAD110A leads into the EDA100C
   1. Plug one lead into the Vin+ port and the other into the Vin- port

1. Use electrode prep swab to clean the index and middle fingers of the participant's non-dominant hand
2. Remove two EL507 electrodes.
   1. Put extra GEL101 on them
3. Place them on the middle phalanx of the participant's index and middle fingers. Refer to the image below

1. Attach the pinch connector of one LEAD110A to the EL507 electrode on the middle finger, and the other to the EL507 electrode on the pointer finger.