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A desktop application cannot be treated as an instant solution to usability
problems experienced while working with a VR application [7], and vice versa.
Success always depends on the usability of a desktop or VR version. However,
the better understanding of the interaction capabilities provided by the desk-
top projection modality makes it a viable alternative to VR. Another factor is
simulator sickness 8 .
Simulator sickness occurs in conjunction with VR exposure. Users having
simulator sickness cannot work in VR for a long time. According to [6] almost a
quarter of computer users suffers from a form of simulator sickness. So approxi-
mately the same proportion of the VRE users are not capable of exploiting VR.
For these users desktop solution remains the only possible option.
The heuristic evaluation of the VRE [13] coupled with the results of user
profiling permit us to pick up criteria helping to choose between VR and desk-
top. Some of them are provided in Table 2. More information can be found in
our other publications [6, 12]. These criteria can be applied not only to biomed-
ical applications, but to other domains as well, especially if the interaction and
visualization aspects are vital for the application under the development.
Fig. 8. Combination of VR and desktop within an immersive virtual environment [1]
(The image is courtesy of Dr. R.G. Belleman, University of Amsterdam, the Nether-
lands).
8 Simulator sickness is a kind of motion sickness except that it occurs in a simulated
environment without actual physical motion [16].
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