The Games for Health Denmark project is an adaptive treatment game (ATG) built for addressing of Post Traumatic Stress Disorder (PTSD). The ATG uses Virtual Reality Exposure Therapy (VRET) to support cognitive behavioral therapists working with Danish Veterans suffering from PTSD.
The general approach of VRET is to expose the patient to various stressful stimuli, while grading the level of stressfulness to stay within the tolerance of the patient. In time the patients response to the stressful stimuli decreases and often also responses to equivalent real world stimuli decrease.
The ATG builds on these well known principles of VRET, but adds to the approach. Typically, VRET solutions use a manual configuration of the simulated exposure environment. The ATG instead starts from a template and uses affective computing to infer the user’s stress level and adjusts the intensity of the simulation accordingly.
Between sessions the ATG uses machine learning to treat physiological readings and simulation logs to further customize future simulation configurations by building a model of which stimuli are effective for the particular user.
Additionally, the ATG includes elements drawn from entertainment video games, such as missions with objectives and a diegetically coherent world, in order to make the tool more engaging for the user.
- Exposure therapy environment with three different modes
- Infers user stress level from skin conductance and blood volume pulse
- Adaptive configuration of exposure environment
- Individual response profiles for users using machine learning
- Interface for therapist to monitor treatment and manually intervene
Main Website: http://gamesforhealth.dk
Pedersen, C.H. and Khaled, R. and Yannakakis, G.N. (2012). Ethical Considerations in Designing Adaptive Persuasive Games. Adjunct Proceedings of the 7th International Conference on Persuasive Technology. (http://www.ep.liu.se/ecp_article/index.en.aspx?issue=068;article=004).