Design and development of portable galvanic skin response acquisition and analysis system

The work concentrated on developing a low-cost, portable, low power, accurate and effective Galvanic Skin response (GSR) acquisition system. Very High Frequency sinewave generator for stimulating current delivery is designed using a wide bandwidth dual JFET Operational Amplifier functioning at specific frequencies in the range 10 KHz to 45 KHz. The portability and power isolation is maintained by providing a USB powered supply to the system with a LabVIEW and MATLAB interface for further processing, which can be facilitated using a single laptop. The developed system has been calibrated and employed for acquiring emotionally stimulated skin response. Two types of emotions are recognized efficiently from the acquired data.