Publications de Christophe Lopez

Experimental characterisation of textile compaction response: A benchmark exercise

Véronique Michaud, Christophe Lopez, Baris Çaglar

This paper reports the results of an international benchmark exercise on the measurement of fibre bed compaction behaviour. The aim was to identify aspects of the test method critical to obtain reliable results and to arrive at a recommended test procedure ...

2021

Imagined paralysis alters somatosensory evoked-potentials

Olaf Blanke, Fred Mast, Christophe Lopez, Estelle Palluel, Silvia Marchesotti

Recent studies employing body illusions have shown that multisensory conflict can alter body representations and modulate low-level sensory processing. One defining feature of these body illusions is that they are sensory driven and thus passive on behalf ...

2020

Oscillatory neural responses evoked by natural vestibular stimuli in humans

Bruno Herbelin, Olaf Blanke, Christophe Lopez, Steven Gale, Aaron Schurger

While there have been numerous studies of the vestibular system in mammals, less is known about the brain mechanisms of vestibular processing in humans. In particular, of the studies that have been carried out in humans over the last 30 years, none has inv ...

American Physiological Society2015

Nobel Prize centenary: Robert Barany and the vestibular system

Olaf Blanke, Christophe Lopez

The hundredth anniversary of Robert Barany's Nobel Prize in Medicine offers the opportunity to highlight the importance of his discoveries on the physiology and pathophysiology of the vestibular organs. Barany developed the method of caloric vestibular sti ...

Cell Press2014

Multisensory Origin of the Subjective First-Person Perspective: Visual, Tactile, and Vestibular Mechanisms

Roberto Martuzzi, Olaf Blanke, Christophe Lopez, Valentin Marc Schmutz, Christian Pfeiffer, Julio Duenas

In three experiments we investigated the effects of visuo-tactile and visuo-vestibular conflict about the direction of gravity on three aspects of bodily self-consciousness: self-identification, self-location, and the experienced direction of the first-per ...

Public Library of Science2013

Bodily ownership and self-location: Components of bodily self-consciousness

Christophe Lopez, Andrea Serino

Recent research on bodily self-consciousness has assumed that it consists of three distinct components: the experience of owning a body (body ownership); the experience of being a body with a given location within the environment (self-location); and the e ...

2013

The thalamocortical vestibular system in animals and humans

Olaf Blanke, Christophe Lopez

The vestibular system provides the brain with sensory signals about three-dimensional head rotations and translations. These signals are important for postural and oculomotor control, as well as for spatial and bodily perception and cognition, and they are ...

Elsevier2011

Spatiotemporal dynamics of visual vertical judgments: early and late brain mechanisms as revealed by high-density electrical neuroimaging

Olaf Blanke, Manuel Mercier, Pär Halje, Christophe Lopez

Constructing and updating an internal model of verticality is fundamental for maintaining an erect posture and facilitating visuo-spatial processing. The judgment of the visual vertical (VV) has been intensively studied in psychophysical investigations and ...

Elsevier2011

Partial and full own-body illusions of epileptic origin in a child with right temporoparietal epilepsy

Olaf Blanke, Christophe Lopez, Lukas Heydrich

Partial and full own-body illusions of neurological origin have been claimed crucial to understand the contribution of bodily experience and perception to self-consciousness. Whereas partial body illusions are relatively common and well defined, much less ...

2011

Abnormal self-location and vestibular vertigo in a patient with right frontal lobe epilepsy

Olaf Blanke, Christophe Lopez, Lukas Heydrich

We describe the case of a 33-year-old man with complex partial seizures characterized by the feeling of being projected outside his body, including dissociation of "mind and self from body" (disembodiment), followed by vestibular vertigo due to right front ...

Elsevier2010

How vestibular stimulation interacts with illusory hand ownership

Olaf Blanke, Bigna Lenggenhager, Christophe Lopez

Artificial stimulation of the peripheral vestibular system has been shown to improve ownership of body parts in neurological patients, suggesting vestibular contributions to bodily self-consciousness. Here, we investigated whether galvanic vestibular stimu ...

Elsevier2010

Gravity and observer's body orientation influence the visual perception of human body postures

Christelle Bachofner, Olaf Blanke, Manuel Mercier, Christophe Lopez

Since human behavior and perception have evolved within the Earth's gravitational field, humans possess an internal model of gravity. Although gravity is known to influence the visual perception of moving objects, the evidence is less clear concerning the ...

Association for Research in Vision and Ophthalmology2009

Vestibular syndrome: A change in internal spatial representation

Christophe Lopez

The vestibular system contributes to a wide range of functions from reflexes to spatial representation. This paper reviews behavioral, perceptive, and cognitive data that highlight the role of changes in internal spatial representation on the vestibular sy ...

2008

Influence of galvanic vestibular stimulation on egocentric and object-based mental transformations

Olaf Blanke, Bigna Lenggenhager, Christophe Lopez

The vestibular system analyses angular and linear accelerations of the head that are important information for perceiving the location of one's own body in space. Vestibular stimulation and in particular galvanic vestibular stimulation (GVS) that allow a s ...

Springer Verlag2008

Body ownership and embodiment: vestibular and multisensory mechanisms

Olaf Blanke, Pär Halje, Christophe Lopez

Body ownership and embodiment are two fundamental mechanisms of self-consciousness. The present article reviews neurological data about paroxysmal illusions during which body ownership and embodiment are affected differentially: autoscopic phenomena (out-o ...

Elsevier2008

How body position changes visual vertical perception after unilateral vestibular loss

Christophe Lopez

Visual vertical perception, posture and equilibrium are impaired in patients with a unilateral vestibular loss. The present study was designed to investigate whether body position (standing upright, sitting on a chair and lying supine) influences the visua ...

2008