INTREPID, a biosignal-based system for the monitoring of patients with anxiety disorders

In this work, we present the concept, the architecture and the evaluation of the INTREPID system. INTREPID is an advanced monitoring system which optimally classifies an individual´s emotional state based on 5 pre-defined emotional classes, (relaxed, neutral, startled, apprehensive and very apprehensive), through association of the information arising from specific biological signals (Blood Volume Pulse, Heart Rate, Galvanic Skin Response and Respiration). The system is utilized for the monitoring of patients with anxiety disorder during therapeutic sessions. It is validated using data obtained through an emotion elicitation experiment based on the International Affective Picture System. An overall classification ratio of 85% is obtained.