Journal: Presence

Abbreviation

Presence (Camb. Mass.)

Publisher

MIT Press

Journal Volumes

ISSN

1054-7460
1531-3263

Description

Filters

2004 - 200962010 - 20158
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Publications1 - 10 of 14
  • Virtual Reality Based Simulation of Hysteroscopic Interventions
    Item type: Journal Article
    Harders, M.; Bachofen, D.; Grassi, M.; et al. (2008)
    Presence
  • Special Issue: Virtual Environments and Rehabilitation Guest Editors' Introduction
    Item type: Other Journal Item
    Munih, Marko; Riener, Robert (2012)
    Presence
  • Special Section: RAVE 2011: Real Actions in Virtual Environments Guest Editors' Introduction
    Item type: Other Journal Item
    Sanchez-Vives, Maria V.; Harders, Matthias (2012)
    Presence
  • Tactile Feedback Improves Performance in a Palpation Task
    Item type: Journal Article
    Santos-Carreras, Laura; Leuenberger, Kaspar; Samur, Evren; et al. (2012)
    Presence
  • Visual and Auditory Augmented Concurrent Feedback in a Complex Motor Task
    Item type: Journal Article
    Sigrist, Roland; Schellenberg, Jürg; Rauter, Georg; et al. (2011)
    Presence
  • Physical Interaction with a Virtual Knee Joint - The 9 DOF Haptic Display of the Munich Knee Joint Simulator
    Item type: Conference Paper
    Frey, Martin; Hoogen, Jens; Burgkart, Rainer; et al. (2006)
    Presence
    In specific fields, medical education at many universities is rather theoretical and the amount of practical training is limited. A significant improvement can be achieved using virtual reality training stations with lifelike visual, acoustic, tactile, and kinesthetic feedback. Particularly, when simulating procedures that require direct contact with the patient body, a realistic haptic simulation addressing tactile and kinesthetic senses can be essential for the acceptance of virtual simulation stations. A purely passive phantom may provide realistic haptic feedback, but its properties cannot be changed over time. This paper presents the haptic display of the Munich Knee Joint Simulator, which was developed to improve training and education of physical knee joint examinations. The haptic interface comprises a combination of passive phantom segments providing realistic tactile sensations, and strong actuators generating highly dynamic kinesthetic force feedback. A 3 degree of freedom (DOF) manipulator was developed in this study to drive the thigh prosthesis and one 6 DOF industrial robot was used to actuate the shank prosthesis. Both manipulators are driven by hybrid admittance-impedance controllers capable of simulating the complex dynamics of the thigh and the shank. Both actuators are equipped with a 6 DOF force torque sensor and they are virtually coupled by an analytical knee joint model. The proposed setup is capable of simulating a mechanical stiffness as high as 80 kN/m in the translatory DOF and simultaneously allows free motion in the rotatory DOF. Experimental tests of the simulator with orthopedic physicians proved the usability of the proposed concept.
  • Measuring Spatial Presence: Introducing and Validating the Pictorial Presence SAM
    Item type: Journal Article
    Weibel, David; Schmutz, Jan; Pahud, Olivier; et al. (2015)
    Presence
  • Evaluation of visual and auditory feedback in virtual obstacle walking
    Item type: Journal Article
    Wellner, Mathias; Schaufelberger, Audrey; von Zitzewitz, Joachim; et al. (2008)
    Presence
  • Construction of a three-sides immersive telecollaboration system
    Item type: Journal Article
    Kunz, Andreas; Spagno, Christian (2004)
    Presence
    In this article the setup and working principle of a new telecollaboration system “blue-c” is described. This system is an attempt to meet the rising expectations from industry of an IT-supported telecollaboration system. One basic requirement is that a three-dimensional representation of objects be possible together with threedimensional representations of the remote users. Since gesture and mimicry represent an important information channel during a discussion, a realistic 3D video representation is used instead of simple animated avatars. A simultaneous projection and image acquisition of the user in a telecollaboration system is necessary to allow simultaneous work of all team members. Thus, in the introduced system, problems had to be overcome such as providing, simultaneously, illumination for the image acquisition by the cameras and darkness for a bright projection to be seen by the user. A new approach was taken to integrate the cameras into the system by placing them behind active projection walls, which can be switched from transparent to opaque electrically. Unlike other systems, the cameras are therefore not visible to the user, who thus behaves more naturally. In addition, since the cameras are placed outside of the projection room, there is more space to move inside the immersive environment. The article describes the technology and functionality of the system, as well as the gathered experiences.
  • Evaluation of control interfaces for desktop virtual environments
    Item type: Journal Article
    Thrash, Tyler; Kapadia, Mubbasir; Moussaïd, Mehdi; et al. (2015)
    Presence
Publications1 - 10 of 14