Now showing items 15-24 of 24

    • Implementation and Evaluation of a Haptic Playback System 

      Williams, Robert L.; Srivastava, Mayank; Conaster, Robert; Howell, John N. (Haptics-e, The electronic journal of haptics research, 2004-05-03)
      This article presents implementation and evaluation of a haptic playback system using the PHANToM haptic inerface, in the context of our Virtual Haptic Back Project at Ohio University. Playback has the potential to improve ...
    • Influence of head models on EEG simulations and inverse source localizations 

      Ramon, Ceon; Schimpf, Paul H.; Haueisen, Jens (2006)
      Background: The structure of the anatomical surfaces, e.g., CSF and gray and white matter, could severely influence the flow of volume currents in a head model. This, in turn, will also influence the scalp potentials and ...
    • Influence of head models on neuromagnetic fields and inverse source localizations 

      Ramon, Ceon; Haueisen, Jens; Schimpf, Paul H. (2006)
      Background: The magnetoencephalograms (MEGs) are mainly due to the source currents. However, there is a significant contribution to MEGs from the volume currents. The structure of the anatomical surfaces, e.g., gray and ...
    • Judging the Orientation of Sinusoidal and Square-Wave Virtual Gratings Presented via 2-DOF and 3-DOF Haptic Interfaces 

      Weisenberger, J.M; Krier, M.J.; Rinker, A. (Haptics-e, The electronic journal of haptics research, 2000-03-28)
      The ability of observers to resolve the orientation of virtual gratings presented on two different haptic interfaces was investigated. Gratings were presented either with the 2-degree-of-freedom Immersion IE2000, or with ...
    • Kane's Equations for Haptic Display of Multibody Systems 

      Gillespie, R. Brent (Haptics-e, The electronic journal of haptics research, 2003-08-18)
      The design of a general-purpose multibody simulator that runs in real-time and features haptic display is presented. The repertoire of this simulator includes systems subject to holonomic con-straints, nonholonomic ...
    • Perceiving Surface Roughness via a Rigid Probe: Effects of Exploration Speed and Mode of Touch 

      Lederman, S.J.; Klatzky, R.L.; Hamilton, C.L.; Ramsay, G.I. (Haptics-e, 1999-10-07)
      Two experiments investigated the psychophysical consequences for roughness perception of altering the speed of motion with which textured surfaces are explored using a rigid probe. Two speed ranges were used: a 10-fold ...
    • Synchronization analysis of the uterine magnetic activity during contractions 

      Ramon, Ceon; Preissl, Hubert; Murphy, Pam; Wilson, James D.; Lowery, Curtis; Eswaran, Hari (2005)
      Background: Our objective was to quantify and compare the extent of synchronization of the spatial-temporal myometrial activity over the human uterus before and during a contraction using transabdominal magnetomyographic (MMG) ...
    • A Unified Treatment of Elastostatic Contact Simulation for Real Time Haptics 

      James, Doug; Pai, Dinesh (Haptics-e, The electronic journal of haptics research, 2001-09-27)
      We describe real-time, physically-based simulation algorithms for haptic interaction with elastic objects. Simulation of contact with elastic objects has been a challenge, due to the complexity of physically accurate ...
    • Virtual Training for a Manual Assembly Task 

      Adams, R.J.; Klowden, D.; Hannaford, Blake (Haptics-e, The electronic journal of haptics research, 2001-10-17)
      This paper describes an experiment, conducted to investigate the benfits of force feedback for virtual reality training of a real task. Three groups of subjects received different levels of training before completing a ...
    • Voxel-Based 6-DOF Haptic Rendering Improvements 

      McNeely, W.A.; Puterbaugh, K.D.; Troy, J.J. (Haptics-e, The electronic journal of haptics research, 2006-01-19)
      An approach is presented for realizing an order-of-magnitude improvement in spatial accuracy for voxel-based 6-DOF haptics. It trades constant-time performance for greater spatial accuracy. This helps to make 6-DOF haptics ...