Changes in electrodermal activity during the performance of deep relaxation training

The present study investigated the change in electrodermal activity (EDA) during deep relaxation training. The experiment involved 10 healthy volunteers who underwent a relaxation procedure using a specially designed audio instructions. The technique included sequential muscle relaxation, deepening of the state through visualization and switching off the internal dialogue. The results showed a significant decrease of the skin conductance level (SCL) and the frequency of electrodermal reactions (EDR) while listening to the instructions. After completing the instructions and moving to the second phase (passive listening to amelodic music), the trend of decreasing EDA was attenuated. This indicates the important role of active cognitive processes in achieving and maintaining the physiological state of relaxation. The obtained data showed the effectiveness of the developed approach and demonstrated the promising application of EDA as a biofeedback for training self-regulation skills.