Towards a psychophysical evaluation of a surgical simulator for bone-burring
Gavin Brelstaff, Marco Agus, Andrea Giachetti, Enrico Gobbetti, Gianluigi Zanetti, Antonio Zorcolo, Bruno Picasso, and Stefano Sellari Franceschini
August 2005
Abstract
The CRS4 experimental bone-burr simulator implements visual and haptic effects through the incorporation of a physics-based contact model and patient-specific data. Psychophysical tests demonstrate that, despite its simplified model and its inherent technological constraints, the simulator can articulate material differences, and that its users can learn to associate virtual bone with real bone material. Tests addressed both surface probing and interior drilling task. We also explore a haptic contrast sensitivity function based on the model s two main parameters: an elastic constant and an erosion factor. Both parameters manifest power-law-like sensitivity with respective exponents of around two and three. Further tests may reveal how well simulator users perceive fine differences in bone material, like those encountered while drilling through real volume boundaries.
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Gavin Brelstaff, Marco Agus, Andrea Giachetti, Enrico Gobbetti, Gianluigi Zanetti, Antonio Zorcolo, Bruno Picasso, and Stefano Sellari Franceschini. Towards a psychophysical evaluation of a surgical simulator for bone-burring. In Proc. Second Symposium on Applied Perception in Graphics and Visualization. Pages 139-143. ACM Press, August 2005.
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Bibtex citation record
@InProceedings{Brelstaff:2005:TPE, author = {Gavin Brelstaff and Marco Agus and Andrea Giachetti and Enrico Gobbetti and Gianluigi Zanetti and Antonio Zorcolo and Bruno Picasso and Stefano Sellari Franceschini}, title = {Towards a psychophysical evaluation of a surgical simulator for bone-burring}, booktitle = {Proc. Second Symposium on Applied Perception in Graphics and Visualization}, pages = {139-143}, publisher = {ACM Press}, address = {Conference held in A Coruña, Spain, August 22--26}, month = {August}, year = {2005}, abstract = { The CRS4 experimental bone-burr simulator implements visual and haptic effects through the incorporation of a physics-based contact model and patient-specific data. Psychophysical tests demonstrate that, despite its simplified model and its inherent technological constraints, the simulator can articulate material differences, and that its users can learn to associate virtual bone with real bone material. Tests addressed both surface probing and interior drilling task. We also explore a haptic contrast sensitivity function based on the model s two main parameters: an elastic constant and an erosion factor. Both parameters manifest power-law-like sensitivity with respective exponents of around two and three. Further tests may reveal how well simulator users perceive fine differences in bone material, like those encountered while drilling through real volume boundaries. }, url = {http://vic.crs4.it/vic/cgi-bin/bib-page.cgi?id='Brelstaff:2005:TPE'}, }
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