Publications de Louis Philippe Albert

Home-based online line bisection test detects visuo-spatial neglect and pseudoneglect in Parkinson's disease

Olaf Blanke, Fosco Bernasconi, Jevita Potheegadoo, Louis Philippe Albert

Introduction: Parkinson's Disease (PD) may lead to cognitive symptoms, including visuo-spatial attentional deficits such as unilateral spatial neglect (USN). Although there is some evidence for USN in PD patients, especially in those with left-sided onset ...

2025

Visual hallucinations in Parkinson's disease are associated with deficits in social perception

Olaf Blanke, Fosco Bernasconi, Jevita Potheegadoo, Louis Philippe Albert, Neza Vehar

Most structured visual hallucinations (VH) in Parkinson's disease (PD) involve animate-social objects, yet current theories fail to account for the prominent social component of VH in PD. To study social perception in PD patients with VH in a behavioral ta ...

SAGE Publications2025

Changes in spatial self-consciousness elicit grid cell–like representation in the entorhinal cortex

Olaf Blanke, Emanuela De Falco, Baptiste Gauthier, Louis Philippe Albert, Hyeongdong Park, Hyukjun Moon, Corentin Marie Hervé Robert Tasu

Grid cells in the entorhinal cortex (EC) encode an individual’s location in space, integrating both environmental and multisensory bodily cues. Notably, body-derived signals are also primary signals for the sense of self. While studies have demonstrated th ...

2024

Numerosity estimation of virtual humans as a digital-robotic marker for hallucinations in Parkinson’s disease

Olaf Blanke, Bruno Herbelin, Fosco Bernasconi, Jevita Potheegadoo, Louis Philippe Albert

Nature Research2024

Numerosity estimation impairment measurement system

Olaf Blanke, Bruno Herbelin, Fosco Bernasconi, Jevita Potheegadoo, Louis Philippe Albert

Numerosity estimation impairment measurement system for diagnostic/prognosis of a neurologi- cal disorder comprising an electronic display device configured to present 3D scene representa- tions/images comprising a plurality of 3D virtual visual stimulus t ...

2024

Sensorimotor and social mechanisms of hallucinations in healthy participants and patients with Parkinson's Disease

Louis Philippe Albert

Most patients with Parkinson's disease (PD) are not only affected by motor symptoms (e.g., tremor, rigidity, bradykinesia), but also experience hallucinations. Importantly, hallucinations are a risk factor for a more rapid cognitive decline, dementia, and ...

EPFL2024

Virtual Reality platform for functional Magnetic Resonance Imaging in Ecologically valid conditions

Olaf Blanke, Bruno Herbelin, Louis Philippe Albert, Baptiste Gauthier

Functional magnetic resonance Brain Imaging (fMRI) is a key non-invasive imaging technique for the study of human brain activity. Its millimetric spatial resolution is at the cost of several constraints: participants must remain static and experience artif ...

New York2021

Real-time 360 Body Scanning System for Virtual Reality Research Applications

Olaf Blanke, Bruno Herbelin, Florian Lance, Louis Philippe Albert

We present a low-cost solution to perform the online and realistic representation of users using an array of depth cameras. The system is composed of a cluster of 10 Microsoft Kinect 2 cameras, each one associated to a compact NUC PC to stream live depth & ...

2019

"Do you feel in control?": Towards Novel Approaches to Characterise, Manipulate and Measure the Sense of Agency in Virtual Environments

Louis Philippe Albert, Camille Marie Jeunet

While the Sense of Agency (SoA) has so far been predominantly characterised in VR as a component of the Sense of Embodiment, other communities (e.g., in psychology or neurosciences) have investigated the SoA from a different perspective proposing complemen ...

2018