The SS3A connects to the TEL100C Remote Monitoring System for the purpose of skin conductance recording. Two Ag-AgCl, non-polarizable electrodes are mounted in individual, ergonomically-designed, polyurethane housings for improved contact. The electrodes are attached to the fingers by Velcro® straps. The electrodes have a 6 mm (dia) contact area with a 1.6 mm cavity to accommodate electrode gel. The SS3A incorporates shielded construction to minimize noise interference and improve recordings.
Simple Sensor (SS) electrodes and transducers connect to the TEL100 series amplifier/transmitter and can generally record biopotentials and other signals for up to 24 hours.
See the TSD203 transducer for the MP150 or MP100 System equivalent.
Usage Recommendations There must be good electrical connections between the skin and the electrodes for EDA to work properly. When using GEL101it is important that the gel has a chance to be absorbed and make good contact before recording begins. Accordingly:
Apply GEL101 to the skin at the point of electrode contact and rub it in.
Fill the SS3A electrode cavity with GEL101.
Attach the SS3A electrode to the subject.
Wait 5 minutes (minimum) before starting to record data.
Unit Note:
BIOPAC software calculates GSR in µMho, the traditional unit of conductance. Micromho (µMho) is interchangeable with the alternative microsiemen (µS). To use Ohm, the traditional measure of
resistance, convert as 1 µMhos equals 1,000,000 ohms.
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