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Development and Evaluation of a Virtual Reality-System with integrated Tracking of Extremities under the Aspect of Acrophobia
Heilbronn University.
Heilbronn University.
University of Regensburg.
Heilbronn University.
2015 (English)Conference paper, Published paper (Refereed)
Abstract [en]

With the help of a Virtual Reality-System (VRsystem) an exposure therapy can be done comfortably within the usual treatment room of the psychologist. The presented Acrophobia Therapy with Virtual Reality (AcTiVity-System) is constructed to be such a treatment instrument. Due to the integration of an avatar and the use of the Oculus Rift it positively differs from common VR system. In an evaluation with42 subjects the effect of the integrated avatar on the individual’s presence was explored. Therefore two groups were formed with 21 persons each. In the first group the subjects were lead througha virtual height scenario with the avatar, while the second group experienced the same scenario without this feature. Further, the suitability of the AcTiVity-System as a treatment system was investigated. T-Tests showed that the avatar’s influence on thebehavior of the participants was significant. To control the systemthe subject was given an input device but participants in the group with the avatar enabled tried subconsciously to control the system through physical interaction with their bodies. Furthermore the comparison with other VR systems showed that participants inour study with the AcTiVity-System scored significantly.

Place, publisher, year, edition, pages
2015. p. 408-417
National Category
Interaction Technologies
Identifiers
URN: urn:nbn:se:kth:diva-244031DOI: 10.1109/IntelliSys.2015.7361173ISI: 000378642300054Scopus ID: 2-s2.0-84962749273ISBN: 978-1-4673-7606-8 (electronic)OAI: oai:DiVA.org:kth-244031DiVA, id: diva2:1288627
Conference
SAI Intelligent Systems Conference
Note

QC 20190215

Available from: 2019-02-13 Created: 2019-02-13 Last updated: 2019-02-15Bibliographically approved
In thesis
1. Supporting Patients and Therapists in Virtual Reality Exposure Therapy
Open this publication in new window or tab >>Supporting Patients and Therapists in Virtual Reality Exposure Therapy
2019 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

 This thesis explores challenges for the design of Virtual Reality Exposure Therapy (VRET) systems. Exposure therapy is the established method for treatment of anxiety disorders and is typically delivered in-vivo, i.e. exposure to phobic stimulus in real environments. Virtual reality (VR), instead, offers the potential to conduct exposure therapy at the clinic. This approach has several benefits in terms of efficiency, customization and control, amount of exposure, and as an transition phase to real situations. However, currently many systems are limited in scope and are designed for research purposes without informing the design from therapist's practices. 

My research aims to contribute towards the understanding of current practices in exposure therapy and investigates challenges for the design of these systems for the two main user groups, patients and therapists. Three different focus areas have been prevalent. First, we have studied therapist in real sessions to inform the design and development of VRET-systems. Second, we have evaluated two different VRET implementations supporting therapists to interact with patients. Third, on the patient's side, we have studied presence on healthy participants focusing on the influence of virtual bodies and patient movement in VR.

This thesis summarises and discusses these studies. Overall, the studies emphasize the complexity of exposure therapy and the need for individualized patient conditions. This poses multiple challenges for the design of VRET-systems such as, first, the systems must offer flexibility to the therapists to orchestrate individualized therapy. Second, the systems must enable rich therapists-patient interaction. Third, the complexity of individualization of scenarios and sessions must be addressed in the design of the therapist's interface. Fourth, for patients, body avatars influences presence differently depending on the scenario and locomotion is challenging as offices are typically small.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2019
Series
TRITA-EECS-AVL
National Category
Human Computer Interaction
Research subject
Human-computer Interaction
Identifiers
urn:nbn:se:kth:diva-244035 (URN)978-91-7873-096-4 (ISBN)
Presentation
2019-03-06, 1440, Lindstedsvägen 3, Stockholm, 13:00 (English)
Opponent
Supervisors
Note

QC 20190214

Available from: 2019-02-14 Created: 2019-02-13 Last updated: 2019-02-28Bibliographically approved

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