Intelligent System for Emotion Recognition Based on Electrodermal Activity Processing

摘要

This paper presents a simple method for detecting a psychological stressed or relaxed state by using only features extracted from the electrodermal activity signal. The signal is acquired with two small electrodes placed on the subject's left hand. Current methodologies used for stress detection provide recognition rates between 40% and 71% while using multiple physiological signals. There are some published papers that describe stress detection methods with satisfactory results without providing a numerical recognition rate. A method used in previous studies to induce a relaxed or stressed state is also presented, which generates similar results in laboratory conditions for different subjects. Also, a very strict signal acquisition protocol is used with the purpose of minimizing artifacts caused by the bad electrode connection, environment or recording device.