Ever wondered how does a lie detector work? Or maybe even wanted to make something alike? Our newest product can help you with that project – GSR click.
As you probably know, a lie detector or polygraph is a device based on the belief that false and deceptive answers produce different physiological response compared to the ones produced when someone is not trying to deceive you. It measures and records several physiological indices among which is
GSR click can be used to measure the electrodermal activity of the human body. To put it more simply, it means that human skin becomes a better conductor of electricity when an internal or external stimulus, which is physiologically arousing, occurs.
Skin conductance is not under conscious control, it is autonomously controlled by the sympathetic nervous system. Therefore, GSR click offers direct insights into autonomous emotional regulation.
The working principle of the GSR click is based on the voltage divider, composed of two resistors. One resistor is a fixed resistor 100kΩ (R4) and the second resistor is the human skin, which acts as the variable resistor. DC Voltage is applied to the skin via one electrode, connected to the 3.3V rail. The other electrode is used to close the electrical circuit through the skin and back to GSR click. Depending on the resistance of the skin, the voltage at the voltage divider will vary.
GSR click is intended to be used with ECG/EMS/GSR cable and GSR electrodes.
For more information about the GSR click, visit the product page.