Towards a psychophysical evaluation of a surgical simulator for bone-burring
Caricamento...
Data
2005-08
Autori
Brelstaff, Gavin
Agus, Marco
Giachetti, Andrea
Gobbetti, Enrico
Zanetti, Gianluigi
Zorcolo, Antonio
Picasso, Bruno
Sellari Franceschini, Stefano
Titolo del periodico
ISSN
Titolo del volume
Editore
ACM
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.
Descrizione
Keywords
haptic , virtual reality , surgical simulator , psychophysics , bone surgery