Publications by Masayuki Hara | EPFL Graph Search

Neuroscience robotics for controlled induction and real-time assessment of hallucinations

Olaf Blanke, Laurent Frédéric Jenni, Masayuki Hara, Giulio Rognini, Eva Blondiaux, Fosco Bernasconi, Herberto Dhanis Pedro De Barros Camacho, Jevita Potheegadoo

Although hallucinations are important and frequent symptoms in major psychiatric and neurological diseases, little is known about their brain mechanisms. Hallucinations are unpredictable and private experiences, making their investigation, quantification a ...

2022

Cogno-Vest: A Torso-Worn, Force Display to Experimentally Induce Specific Hallucinations and Related Bodily Sensations

Hannes Bleuler, Olaf Blanke, Oliver Alan Kannape, Masayuki Hara, Kenny Jeanmonod, Atena Fadaeijouybari, Jevita Potheegadoo

Recent advances in virtual reality and robotic technologies have allowed researchers to explore the mechanisms underlying bodily aspects of self-consciousness which are largely attributed to the multisensory and sensorimotor processing of bodily signals (b ...

2022

Robot-induced hallucinations in Parkinson’s disease depend on altered sensorimotor processing in fronto-temporal network

Dimitri Nestor Alice Van De Ville, Olaf Blanke, Michel Akselrod, Masayuki Hara, Giulio Rognini, Eva Blondiaux, Stéphanie Konik, Michela Bassolino, Nathan Quentin Faivre, Fosco Bernasconi, Matteo Franza, Jevita Potheegadoo, Giedre Stripeikyte

Hallucinations in Parkinson’s disease (PD) are disturbing and frequent non-motor symptoms and constitute a major risk factor for psychosis and dementia. We report a robotics-based approach applying conflicting sensorimotor stimulation, enabling the inducti ...

2021

Modulation of Bodily Self-Consciousness by Self and External Touch

Olaf Blanke, Masayuki Hara, Roy Salomon, Noriaki Kanayama

The full body illusion (FBI) is a bodily illusion based on the application of multisensory conflicts inducing changes in bodily self-consciousness (BSC), which has been used to study cognitive brain mechanisms underlying body ownership and related aspects ...

2021

Tactile spatial discrimination on the torso using vibrotactile and force stimulation

Olaf Blanke, Oliver Alan Kannape, Masayuki Hara, Matteo Franza

There is a steadily growing number of mobile communication systems that provide spatially encoded tactile information to the humans’ torso. However, the increased use of such hands-off displays is currently not matched with or supported by systematic perce ...

2021

Thought consciousness and source monitoring depend on robotically-controlled sensorimotor conflicts and illusory states

Hannes Bleuler, Olaf Blanke, Pierre Progin, Masayuki Hara, Giulio Rognini, Polona Pozeg, Roy Salomon, Andrea Serino, Marco Solcà, Fosco Bernasconi, Herberto Dhanis Pedro De Barros Camacho, Giedre Stripeikyte

Thought insertion (TI) is characterized by the experience that certain thoughts, occurring in one’s mind, are not one’s own, but the thoughts of somebody else and suggestive of a psychotic disorder. We report a robotics-based method able to investigate the ...

2020

Neural Mechanisms Of Robot-Induced Hallucinations In Healthy Participants And Symptomatic Hallucinations Of Neurological And Psychiatric Origin

Patric Hagmann, Dimitri Nestor Alice Van De Ville, Olaf Blanke, Michel Akselrod, Pierre Progin, Masayuki Hara, Giulio Rognini, Eva Blondiaux, Nathan Quentin Faivre, Jevita Potheegadoo, Giedre Stripeikyte, Kim Do

OXFORD UNIV PRESS2020

Torso-mounted Vibrotactile Interface to Experimentally Induce Illusory Own-body Perceptions

Hannes Bleuler, Olaf Blanke, Masayuki Hara, Giulio Rognini

Recent developments in virtual reality and robotic technologies have allowed investigating the behavioural and brain mechanisms that grounds self-consciousness in the multisensory (e.g. vision and touch) and sensorimotor processing of bodily signals. Yet, ...

IEEE2019

Neural Mechanisms of Presence Hallucination and Passivity Experience Induced by Sensorimotor Conflicts in Healthy Subjects: A Robotics-fMRI Study

Olaf Blanke, Michel Akselrod, Masayuki Hara, Giulio Rognini, Roy Salomon, Nathan Quentin Faivre, Jevita Potheegadoo

2018

Device, System, and Method for Robot-Controlled Induction of the Feeling of Human Presence

Olaf Blanke, Masayuki Hara, Giulio Rognini

A method for inducing the feeling of a presence (FoP) in a subject by using a master-slave robotic system, the method including the steps of altering a visual perception of a surrounding environment of the subject, connecting the subject with a robotic mas ...

2016

Voluntary self-touch increases body ownership

Olaf Blanke, Masayuki Hara, Giulio Rognini, Polona Pozeg

Experimental manipulations of body ownership have indicated that multisensory integration is central to forming bodily self representation. Voluntary self touch is a unique multisensory situation involving corresponding motor, tactile and proprioceptive si ...

Frontiers Media2015

Neurological and Robot-Controlled Induction of an Apparition

Hannes Bleuler, Bruno Herbelin, Olaf Blanke, Lukas Heydrich, Masayuki Hara, Giulio Rognini, Polona Pozeg, Roy Salomon, Andrea Serino

Tales of ghosts, wraiths, and other apparitions have been reported in virtually all cultures. The strange sensation that somebody is nearby when no one is actually present and cannot be seen (feeling of a presence, FOP) is a fascinating feat of the human m ...

Cell Press2014

A novel manipulation method of human body ownership using an fMRI-compatible master-slave system

Olaf Blanke, Wietske Van der Zwaag, Tobias Kober, Masayuki Hara, Giulio Rognini, Roy Salomon

Bodily self-consciousness has become an important topic in cognitive neuroscience aiming to understand how the brain creates a unified sensation of the self in a body. Specifically, full body illusion (FBI) in which changes in bodily self-consciousness are ...

Elsevier2014

Virtual Environment to Evaluate Multimodal Feedback Strategies for Augmented Navigation of the Visually Impaired

Hannes Bleuler, Roger Gassert, Solaiman Shokur, Masayuki Hara

This paper proposes a novel experimental environ- ment to evaluate multimodal feedback strategies for augmented navigation of the visually impaired. The environment consists of virtual obstacles and walls, an optical tracking system and a simple device wit ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Indirect Manipulation of a Sphere on a Flat Disk Using Force Information

Masayuki Hara, Jian Huang

The objective of this study is to verify if only the use of robotic force feedback enables indirect and dynamic manipulations which are difficult for human beings to perform. Human beings usually control the trajectory of an object using visual feedback; f ...

2010

Tendon-Based Transmission for Surgical Robotics: Systematic Experimental Friction Modeling

Hannes Bleuler, Patrick Schoeneich, Ricardo Daniel Rita Beira, Masayuki Hara, Ali Sengül

Increased miniaturization of surgical instruments is essential to successfully perform surgical procedures in restricted areas as in many applications of minimally-invasive surgery. Miniaturization permits increase in dexterity and decrease in access incis ...

2010

Indirect Manipulation of a Sphere on a Flat Disk Using Force Information

Masayuki Hara, Jian Huang

The objective of this study is to verify if only the use of robotic force feedback enables indirect and dynamic manipulations which are difficult for human beings to perform. Human beings usually control the trajectory of an object using visual feedback; f ...

2009