BIOPAC® Systems, Inc. Logo

EDA (GSR) subject preparation

BIOPAC offers a variety of setups for recording electrodermal activity, including

The following general guidelines will improve the quality of data from any setup:

  1. Never abrade the skin.
    • Note: For MRI setups, lightly abrading the skin may sometimes help if the subject has particularly calloused fingers. Still, this is not recommended and should be used as a last resort only. See MRI Guidelines for additional information.
  2. If you clean the electrode site, do it with water for all subjects.
  3. Make sure you have enough gel on the electrodes. (Dry disposable electrodes will result in a deteriorated signal. Follow the storage guidelines for the electrodes to prevent them from drying out)
  4. Use isotonic gel. (If using disposable electrodes and they appear dry you can still use them by applying isotonic gel as long as the dry gel on the electrodes has not crystallized)
  5. Attach the electrodes 5-10 minutes before recording.

For more detailed information, see Guidelines – EDA, EDR, GSR, SCL, and SCR.

Associated Applications

Associated Application Notes

Associated Disciplines

Associated Advanced Features

Spotlight On
BioNomadix Wireless 2 Ch Resp/ECG Amplifier

BioNomadix Wireless RSP with ECG Amplifier

The Dual Wireless Respiration and ECG BioNomadix module pair consists of a matched transmitter and receiver pair optimized for respiration and electrocardiogram data; record one or both signals. RSP (CH A)–measure abdominal or thoracic expansion and contraction while breathing ECG (CH B)–record electrical activity generated by the heart The high signal to noise ratio and […]

View All
Latest News

New Citations | BIOPAC in HRV Analysis Research

BIOPAC provides researchers with a complete range of tools to gather data on heart rate variability (HRV). The following studies demonstrate just some of the ways in which HRV research benefits from the implementation of BIOPAC hardware and software solutions. PTSD and HRV Post-traumatic stress disorder (PTSD) has been associated with dysfunction of the autonomic […]

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

Read All
Request a Demonstration
Request a Demonstration