GSR Sensor for ActiveTwo

This GSR Sensor for the ActiveTwo EEG system from BioSemi is a Galvanic Skin Response (GSR) / Electro-dermal Activity (EDA) sensor electrode set that comes pre-assembled with a pair of pure Ag/AgCl sintered electrodes. Using pure and high-quality Ag/AgCl sintered electrodes for GSR/EDA applications is crucial to ensure low offset voltages from distorting the GSR/EDA signal (non-polarizable).

GSR Sensor for ActiveTwo has a cable length of 1.5m. It terminates in a 7-pin DIN plug which connects to the AUX2 or AUX3 socket (whichever is available) of the ActiveTwo AD-Box from BioSemi.

One GSR Sensor for ActiveTwo per pack.

Technical Specifications

• Electrode Material: Pure, sintered Ag/AgCl
• Cable Length: 1.5m
• Connector: 7-pin DIN plug
• Applications: GSR/EDA recordings
• Compatibility: ActiveTwo, BioSemi
• Packaging: 1 x GSR Sensor for ActiveTwo per pack

ActiveTwo Hardware Prerequisites

We install the GSR module here in our office. If an ERGO module is installed already, we would replace the ERGO module with a combo GSR/ERGO module and include a GSR/ERGO Splitter Cable.

Application Note

When setting up a subject with GSR/EDA, do not use alcohol-based products to cleanse the site. Cleansing the site with alcohol-based products to improve conductivity is not recommended, as this will only dry the skin surface and alter the response. Instead lightly abrade the skin with a dry paper towel to remove any dead skin cells.

For best results, use an isotonic electrode paste (see below). The salt concentration of hypo- or hypertonic pastes and gels (e.g., Signa Gel) does not match that of the natural skin and will clog the eccrine glands. Isotonic electrode paste has the same ionic concentration as the eccrine glands in the skin.