Publications de Henrique Galvan Debarba

Agency Deficits in a Human Genetic Model of Schizophrenia: Insights From 22q11DS Patients

Olaf Blanke, Nathan Quentin Faivre, Roy Salomon, Maude Schneider, Oliver Alan Kannape, Mariia Kaliuzhna, Henrique Galvan Debarba

Schizophrenia is a chronic and disabling mental illness characterized by a disordered sense of self. Current theories suggest that deficiencies in the sense of control over one’s actions (Sense of Agency, SoA) may underlie some of the symptoms of schizophr ...

2022

The Critical Role of Self-Contact for Embodiment in Virtual Reality

Ronan Boulic, Sidney Bovet, Bruno Herbelin, Eray Molla, Henrique Galvan Debarba

With the broad range of motion capture devices available on the market, it is now commonplace to directly control the limb movement of an avatar during immersion in a virtual environment. Here, we study how the subjective experience of embodying a full-bod ...

2018

Egocentric Mapping of Body Surface Constraints

Ronan Boulic, Eray Molla, Henrique Galvan Debarba

The relative location of human body parts often materializes the semantics of on-going actions, intentions and even emotions expressed, or performed, by a human being. However, traditional methods of performance animation fail to correctly and automaticall ...

2018

Self-attribution of distorted reaching movements in immersive virtual reality

Olaf Blanke, Henrique Galvan Debarba, Ronan Boulic, Bruno Herbelin, Roy Salomon

This study explores the extent to which individuals embodied in Virtual Reality tend to self-attribute the movements of their avatar. More specifically, we tested subjects performing goal-directed movements and distorted the mapping between user and avatar ...

2018

Characterizing first and third person viewpoints and their alternation for embodied interaction in virtual reality

Olaf Blanke, Ronan Boulic, Bruno Herbelin, Roy Salomon, Henrique Galvan Debarba, Sidney Bovet

Empirical research on the bodily self has shown that the body representation is malleable, and prone to manipulation when conflicting sensory stimuli are presented. Using Virtual Reality (VR) we assessed the effects of manipulating multisensory feedback (f ...

Public Library of Science2017

Embodiment Sensitivity to Movement Distortion and Perspective Taking in Virtual Reality

Henrique Galvan Debarba

Despite recent technological improvements of immersive technologies, Virtual Reality suffers from severe intrinsic limitations, in particular the immateriality of the visible 3D environment. Typically, any simulation and manipulation in a cluttered environ ...

EPFL2017

Embodied interaction using non-planar projections in immersive virtual reality

Ronan Boulic, Bruno Herbelin, Henrique Galvan Debarba, Sami Perrin

In this paper we evaluate the use of non-planar projections as a means to increase the Field of View (FoV) in embodied Virtual Reality (VR). Our main goal is to bring the virtual body into the user’s FoV and to understand how this affects the virtual body/ ...

ACM Press2015

Characterizing Embodied Interaction in First and Third Person Perspective Viewpoints

Ronan Boulic, Bruno Herbelin, Eray Molla, Henrique Galvan Debarba

Third Person Perspective (3PP) viewpoints have the potential to expand how one perceives and acts in a virtual environment. They offer increased awareness of the posture and of the surrounding of the virtual body as compared to First Person Perspective (1P ...

2015

Disambiguation Canvas: A Precise Selection Technique for Virtual Environments

Ronan Boulic, Anderson Maciel, Henrique Galvan Debarba

We present the disambiguation canvas, a technique developed for easy, accurate and fast selection of small objects and objects inside cluttered virtual environments. Disambiguation canvas rely on selection by progressive refinement, it uses a mobile device ...

Springer Berlin Heidelberg2013