Chill-Out: Relaxation Training through Respiratory Biofeedback in a Mobile Casual Game Conference Paper uri icon


  • Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2014. We present Chill-Out, an adaptive biofeedback game that teaches relaxation skills by monitoring the breathing rate of the player. The game uses a positive feedback loop that penalizes fast breathing by means of a proportional derivative control law: rapid (and/or increasing) breathing rates increase game difficulty and reduce the final score of the game. We evaluated Chill-Out against a conventional non-biofeedback game and traditional relaxation based on deep breathing. Measurements of breathing rate, electrodermal activity, and heart rate variability show that playing Chill-Out leads to lower arousal during a subsequent task designed to induce stress.

published proceedings

  • Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST

author list (cited authors)

  • Parnandi, A., Ahmed, B., Shipp, E., & Gutierrez-Osuna, R.

citation count

  • 31

complete list of authors

  • Parnandi, Avinash||Ahmed, Beena||Shipp, Eva||Gutierrez-Osuna, Ricardo

editor list (cited editors)

  • Memmi, G., & Blanke, U.

publication date

  • January 2014