Is that My Heartbeat? Measuring and Understanding Modality-Dependent Cardiac Interoception in Virtual Reality

Enhancing Agency in Posttraumatic Stress Disorder Therapies Through Sensorimotor Technologies

Posttraumatic stress disorder (PTSD) is a significant public health concern, with only a third of patients recovering within a year of treatment. While PTSD often disrupts the sense of body ownership and sense of agency (SA), attention to the SA in trauma has been lacking. This perspective paper explores the loss of the SA in PTSD and its relevance in the development of symptoms. Trauma is viewed as a breakdown of the SA, related to a freeze response, with peritraumatic dissociation increasing the risk of PTSD. Drawing from embodied cognition, we propose an enactive perspective of PTSD, suggesting therapies that restore the SA through direct engagement with the body and environment. We discuss the potential of agency-based therapies and innovative technologies such as gesture sonification, which translates body movements into sounds to enhance the SA. Gesture sonification offers a screen-free, noninvasive approach that could complement existing trauma-focused therapies. We emphasize the need for interdisciplinary collaboration and clinical research to further explore these approaches in preventing and treating PTSD.

Enhancing Cardiopulmonary Resuscitation Training with Mixed Reality: Improving Cardiopulmonary Resuscitation Performance and Enjoyment

Cardiac arrests stand as a leading cause of mortality worldwide. When performed timely, cardiopulmonary resuscitation (CPR) can significantly improve a person's chance of survival during a cardiac arrest. Given that the majority of cardiac arrests happen outside of hospitals, it becomes crucial to equip as many laypeople as possible with CPR skills. Recently, mixed reality has garnered attention as a potential tool for CPR training. This study, with a randomized controlled trial (RCT), tested the effectiveness of a mixed reality CPR training compared to traditional training among laypeople (N = 59). Results revealed that participants in the mixed reality training either showed similar (i.e., compressions per minute, exam scores) or better (i.e., compression depth) CPR performance compared to participants that received the traditional training. Furthermore, the mixed reality training was perceived as more enjoyable than the traditional training. Finally, across conditions, participants reported comparable levels of presence, indicating a similar sense of being in a CPR situation. Based on these findings, we conclude that mixed reality CPR training can serve as a viable alternative for traditional CPR training. Especially, the enjoyable nature of mixed reality can boost motivation and encourage more people to follow or refresh previous CPR training.