Quantifying perception of nonlinear elastic tissue models using multidimensional scaling

Sarthak Misra, Philipp Fuernstahl, K.T. Ramesh, Allison M. Okamura, Matthias Harders

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    4 Citations (Scopus)
    47 Downloads (Pure)

    Abstract

    Simplified soft tissue models used in surgical simulations cannot perfectly reproduce all material behaviors. In particular, many tissues exhibit the Poynting effect, which results in normal forces during shearing of tissue and is only observed in nonlinear elastic material models. In order to investigate and quantify the role of the Poynting effect on material discrimination, we performed a multidimensional scaling (MDS) study. Participants were presented with several pairs of shear and normal forces generated by a haptic device during interaction with virtual soft objects. Participants were asked to rate the similarity between the forces felt. The selection of the material parameters – and thus the magnitude of the shear and normal forces – was based on a pre-study prior to the MDS experiment. It was observed that for nonlinear elastic tissue models exhibiting the Poynting effect, MDS analysis indicated that both shear and normal forces affect user perception.
    Original languageEnglish
    Title of host publicationWorld Haptics 2009 - Third Joint EuroHaptics conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems
    Place of PublicationWashington, DC
    PublisherIEEE Computer Society Press
    Pages570-575
    Number of pages6
    ISBN (Print)978-1-4244-3858-7
    DOIs
    Publication statusPublished - 18 Mar 2009
    Event3rd Joint EuroHaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, World Haptics 2009 - Salt Lake City, United States
    Duration: 18 Mar 200920 Mar 2009

    Conference

    Conference3rd Joint EuroHaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, World Haptics 2009
    Abbreviated titleWorld Haptics 2009
    CountryUnited States
    CitySalt Lake City
    Period18/03/0920/03/09

    Keywords

    • METIS-266523
    • IR-71277
    • Multidimensional Scaling
    • virtual soft objects
    • soft tissue models
    • shear forces
    • EWI-17864
    • user perception
    • surgical simulations
    • Poynting effect
    • normal forces
    • nonlinear elastic tissue models
    • haptic device

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