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
BIOPAC training

T4 Human Physiology Conference

Register Today! T4: Tools, Trends, Techniques, and Technology Monday, July 24, 2017 – Wednesday, July 26, 2017 Join BIOPAC for three days of hands-on, small-group human physiology workshops, presented by renowned experts, on the beautiful University of California at Santa Barbara campus in Santa Barbara, California, USA. Who should attend Anyone who records and analyzes […]

View All
Latest News

Mobita Advances Prestimulus EEG Research

The Mobita 32-Channel EEG recording system was used in research examining if physiological data can be used to predict truly random events that correspond to perceptual stimuli. Baumgart, et al. from the University of California Santa Barbara utilized a quantum random number generator (qRNG) to choose from three randomized conditions: light, sound, and no stimulus. […]

News Citations—Respiration and Cardiovascular Activity

BIOPAC provides software and hardware that allow for research teams to record and analyze respiration activity in physiological experimentation. Here are a few notable studies in monitoring respiration and cardiovascular activity. The coupling between peripheral microcirculation and slow breathing: The purpose of this study was to investigate the coupling of breathing movements and microcirculatory blood […]

Read All
Request a Demonstration
Request a Demonstration