BIOPAC® Systems, Inc. Logo

Gel for EDA (GSR)/SCR

Only GEL101 (a solution designed to mimic the salt concentration of sweat) should be used with reusable skin conductance (electrodermal activity) recording electrodes. GEL101 electrode paste is specially formulated with 0.5% saline in a neutral base. Similarly, EL507 is BIOPAC's only disposable electrode designed for use in skin conductance measurements. EL507 also uses an isotonic recording gel, similar to GEL101. The use of gels formulated for other biopotential measurements leads to an overestimate of the tonic skin conductance level and violates standard recommendations for methods of monitoring electrodermal activity.

Page last modified 24Dec2014

Associated Applications

Associated Application Notes

Associated Disciplines

Spotlight On
StimTracker Event Marking

StimTracker Stimulus Presentation Marker Interface – USB

StimTracker Duo. StimTracker Quad MARK. SYNC. AUDIT. StimTracker Duo and Quad autonomously  detect the onset of events to avoid operating system delays. The Quad adds direct TTL output, support for vocal response onset (voice key), more light sensors, and the option to install a Raspberry Pi board. Onset of Auditory Stimuli – Pass the audio via StimTracker, set […]

View All
Latest News

Students Get Smart

Science Night at Adams Elementary (Santa Barbara, CA) encourages students to discover, play, explore and learn about the importance of science and engineering in daily life. BIOPAC set up a BioNomadix Wireless Smart Center to allow students to record their heart rate. Electrodes were placed on students and leads were connected to a wireless transmitter that sent data […]

New Citations | Stimulation and Mental Processing

Recent developments regarding electric stimulation and mental processing have lead to interesting developments in psychophysiology and physiological sciences. The following studies look at developments in how we potentially care for and understand solutions to issues with mental health, as well as new ways to monitor electrical stimulus on participants. The ventromedial prefrontal cortex (vmPFC) is […]

Read All
Request a Demonstration
Request a Demonstration