Roger Gassert

Cette personne n’est plus à l’EPFL

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Publications associées (31)

Hybrid Ultrasonic Motor and Electrorheological Clutch System for MR-Compatible Haptic Rendering

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Etienne Burdet

Using haptic interfaces in combination with functional magnetic resonance imaging (fMRI) could lead to important insights into the brain mechanisms of human motor control and related dysfunctions. However, in addition to the usual requirements for haptic i ...

IEEE2006

MRI/fMRI-Compatible Robotic System With Force Feedback for Interaction With Human Motion

Roland Moser, Hannes Bleuler, Roger Gassert, Etienne Burdet

This paper presents a robotic system that is compatible with anatomical magnetic resonance imaging (MRI) as well as with the more sensitive functional MRI (fMRI), and can safely and smoothly interact with humanmotion during the imaging. The system takes ad ...

2006

Active Mechatronic Interface for Haptic Perception Studies with Functional Magnetic Resonance Imaging: Compatibility and Design Criteria

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Etienne Burdet

Functional brain exploration methodologies such as functional magnetic resonance imaging (fMRI) are critical tools to study perceptual and cognitive processes. In order to develop complex and well-controlled fMRI paradigms, researchers are interested in us ...

2006

A Versatile MRI/fMRI Compatible Spherical 2-Dof Haptic Interface

Roland Moser, Hannes Bleuler, Roger Gassert, Dominique Chapuis, Ulrich Spälter

2006

Investigation of a Cable Transmission for the Actuation of MR Compatible Haptic Interfaces

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Ganesh Gowrishankar, Etienne Burdet

This paper investigates a cable transmission to remotely actuate MR compatible robots over a distance of several meters. Such a transmission could be an interesting solution for haptic interfaces for neuroscience studies performing force feedback during fu ...

2006

A 2-DOF fMRI compatible haptic interface to investigate the neural control of arm movements

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Olivier Lambercy, Ludovic Dovat, Yves Ruffieux, Etienne Burdet

This paper describes a two-degrees-of-freedom haptic interface to investigate the brain mechanisms of human motor control, which is capable of safely and gently interacting with human arm motion during functional magnetic resonance imaging (fMRI). A hydros ...

2006

Actuation Methods for Applications in MR Environments

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Ludovic Dovat, Etienne Burdet

The choice of an adequate actuation method is a central issue in the development of any mechatronic device and strongly determines the dynamic performances of the system. This choice is particularly difficult for robotic systems working within a magnetic r ...

2006

MR-compatible robotics to investigate human motor control

Roger Gassert

Robotic interfaces can dynamically interact with humans performing movements and can be used to study neuromuscular adaptation. Such devices can produce computer controlled dynamics during movement and measure the interaction force and movement trajectory. ...

EPFL2006

Multi-Joint Arm Movements to Investigate Motor Control with fMRI

Hannes Bleuler, Roger Gassert, Ludovic Dovat, Etienne Burdet

Performing multi-joint arm movements in controllable dynamic environments during functional magnetic resonance imaging (fMRI) could provide important insights into the brain mechanisms involved in human motor control and related dysfunctions. In order to o ...

2005

FMRI compatible haptic interface actuated with traveling wave ultrasonic motor

Yves Perriard, Roger Gassert, Matteo Bullo, Dominique Chapuis, Markus Flückiger

We are developing haptic interfaces compatible with functional Magnetic Resonance Imaging (fMRI) for neuroscience studies. The presented prototype with one rotary degree of freedom is actuated by a traveling wave ultrasonic motor operating under admittance ...

2005

Evaluation of MR-Compatibility of Electrostatic Linear Motor

Hannes Bleuler, Laurent Sache, Roger Gassert

This paper reports a new MRI (Magnetic Resonance Imaging) compatible actuator that can operate near an MRI without degrading its imaging quality. A high-power electrostatic motor is introduced and its MR-compatibility is examined, both experimentally and t ...

2005

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