Publications de Dominique Chapuis

MOSAIC on the ELT: Front-End and instrument AITV planification

Dominique Chapuis, Rodrigo Araujo Fraga Da Silva

MOSAIC is the Multi-Object Spectrograph for the ESO-ELT (European Southern Observatory-Extremely Large Telescope). The Laboratoire d'Astrophysique de Marseille (LAM) is in charge of the “Assembly, Integration, Test and Verification (AIT/V)” activities for ...

SPIE2024

Neuroscience robotics to investigate multisensory integration and bodily awareness

Roger Gassert, Dominique Chapuis, Roberto Martuzzi, Olaf Blanke, Silvio Ionta, Christian Pfeiffer, Julio Duenas

Humans experience the self as localized within their body. This aspect of bodily self-consciousness can be experimentally manipulated by exposing individuals to conflicting multisensory input, or can be abnormal following focal brain injury. Recent technol ...

2012

Augmented White Cane with Multimodal Haptic Feedback

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Simon Gallo, Laura Santos Carreras

This paper proposes an instrumented handle with multimodal augmented haptic feedback, which can be integrated into a conventional white cane to extend the haptic exploration range of visually impaired users. The information extracted from the environment t ...

IEEE2010

Application of ultrasonic motors to MR-compatible haptic interfaces

Dominique Chapuis

Functional Magnetic Resonance Imagery (fMRI) is an imaging technique allowing the observation of brain activity. Haptic interfaces can be used in conjunction with fMRI to stimulate the subject while measuring brain activity. Using robotic stimulation over ...

EPFL2009

Development of a 2-DOF Electrostatic Haptic Joystick for MRI/fMRI Applications

Hannes Bleuler, Roger Gassert, Dominique Chapuis

This paper describes the development of a 2-DOF electrostatic haptic joystick designed for neuroscience studies in an MRI/fMRI. The joystick is fabricated using non-magnetic materials and actuated by two high-power electrostatic motor units which produce v ...

2009

Supplementary motor area and anterior intraparietal area integrate fine-graded timing and force control during precision grip

Roger Gassert, Dominique Chapuis, Etienne Burdet

We investigated the neuronal processing of the physiologically particularly important precision grip (opposition of index finger and thumb) by the combination of functional magnetic resonance imaging (fMRI) and an MR-compatible haptic interface. Ten health ...

Wiley-Blackwell2009

Sensing clove for brain studies: Design and assessment of its compatibility for fMRI with a robust test

Roger Gassert, Dominique Chapuis

In this paper, we describe a biomimetic-fabric-based sensing glove that can be used to monitor hand posture and gesture. Our device is made of a distributed sensor network of piezoresistive conductive elastomers integrated into an elastic fabric. This solu ...

Institute of Electrical and Electronics Engineers2008

A hybrid ultrasonic motor and electrorheological fluid clutch actuator for force-feedback in MRI/fMRI

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Etienne Burdet

This paper presents a safe, electrically powered MR-compatible actuator with a large range of output impedance, which can be used at the entry of the scanner bore. This actuator is composed of an ultrasonic motor (USM) and a torque-controlled electrorheolo ...

2008

A Haptic Knob with a Hybrid Ultrasonic Motor and Powder Clutch Actuator

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Xavier Michel, Etienne Burdet

In haptics, the forces to be displayed vary widely in terms of magnitude and bandwidth. A single actuator can hardly comply with these requirements. It has thus been proposed to combine electrical motors and passive devices in a hybrid actuator to cover a ...

2007

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

Position Controlled Diamagnetic Linear Conveyor

Hannes Bleuler, Dominique Chapuis, Benjamin Burns, François Barrot, Thomas Bosgiraud

Magnetic levitation is an interesting concept in applications where friction and wear-particle contamination should be avoided. In this respect, a former study has shown that diamagnetic levitation, in conjunction with an electrodynamic impulse drive, is a ...

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

Preliminary Investigations on a Diamagnetically Levitated Linear Conveyor

Roland Moser, Hannes Bleuler, Laurent Sache, Dominique Chapuis, François Barrot, Thomas Bosgiraud

Diamagnetic levitation is the only passive levitation at room temperature. It is interesting to use this principle for a contactless conveyor in applications where friction and wear-particle contamination should be avoided such as in a microfactory. Using ...

2006

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