Publications by Jevita Potheegadoo

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

Real-time fMRI neurofeedback modulates induced hallucinations and underlying brain mechanisms

Dimitri Nestor Alice Van De Ville, Olaf Blanke, Giulio Rognini, Nicolas Gninenko, Nathan Quentin Faivre, Herberto Dhanis Pedro De Barros Camacho, Jevita Potheegadoo, Elenor Morgenroth

Hallucinations can occur in the healthy population, are clinically relevant and frequent symptoms in many neuropsychiatric conditions, and have been shown to mark disease progression in patients with neurodegenerative disorders where antipsychotic treatmen ...

Springer Science and Business Media LLC2024

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

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

Nature Research2024

Embodiment in episodic memory through premotor-hippocampal coupling

Bruno Herbelin, Olaf Blanke, Nathalie Heidi Meyer, Jevita Potheegadoo, Baptiste Gauthier, Florian Lance, Mariana Babo Rebelo

Episodic memory (EM) allows us to remember and relive past events and experiences and has been linked to cortical-hippocampal reinstatement of encoding activity. While EM is fundamental to establish a sense of self across time, this claim and its link to t ...

Springer Science and Business Media LLC2024

Numerosity estimation impairment measurement system

Bruno Herbelin, Olaf Blanke, 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

Sense of agency during encoding predicts subjective reliving

Olaf Blanke, Nathalie Heidi Meyer, Jevita Potheegadoo, Baptiste Gauthier, Florian Lance

Autonoetic consciousness (ANC), the ability to re-experience personal past events links episodic memory and self-consciousness by bridging awareness of oneself in a past event (i.e., during its encoding) with awareness of oneself in the present (i.e., duri ...

Society for Neuroscience2024

Phantom Boarder Relates to Experimentally‐Induced Presence Hallucinations in Parkinson's Disease

Olaf Blanke, Fosco Bernasconi, Jevita Potheegadoo

Phantom boarder (PB) is the sensation that someone uninvited is in the patient's home despite evidence to the contrary. It is mostly reported by patients with neurodegenerative disorders such as Alzheimer's disease, dementia with Lewy bodies or Parkinson's ...

2023

The diagnostic performance of functional dopaminergic scintigraphic imaging in the diagnosis of dementia with Lewy bodies: an updated systematic review

Olaf Blanke, Fosco Bernasconi, Jevita Potheegadoo

IntroductionDopaminergic scintigraphic imaging is a cornerstone to support the diagnosis in dementia with Lewy bodies. To clarify the current state of knowledge on this imaging modality and its impact on clinical diagnosis, we performed an updated systemat ...

SPRINGER2023

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

Presence Hallucinations during Locomotion in Patients with Parkinson's Disease

Olaf Blanke, Herberto Dhanis Pedro De Barros Camacho, Jevita Potheegadoo

2022

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

Linking Agent Detection of Invisible Presences to the Self: Relevance for Religious and Spiritual Experiences

Olaf Blanke, Jevita Potheegadoo, Neza Vehar

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

Increased functional connectivity of the intraparietal sulcus underlies the attenuation of numerosity estimations for self-generated words

Michael Eric Anthony Pereira, Olaf Blanke, Giulio Rognini, Nathan Quentin Faivre, Jevita Potheegadoo, Giedre Stripeikyte

Previous studies have shown that self-generated stimuli in auditory, visual, and somatosensory domains are attenuated, producing decreased behavioral and neural responses compared to the same stimuli that are externally generated. Yet, whether such attenua ...

2021

Fronto-Temporal Disconnection Within the Presence Hallucination Network in Psychotic Patients With Passivity Experiences

Patric Hagmann, Olaf Blanke, Alessandra Griffa, Pierre Progin, Giulio Rognini, Eva Blondiaux, Roy Salomon, Nathan Quentin Faivre, Jevita Potheegadoo, Giedre Stripeikyte, Kim Do

Psychosis, characterized by hallucinations and delusions, is a common feature of psychiatric disease, especially schizophrenia. One prominent theory posits that psychosis is driven by abnormal sensorimotor predictions leading to the misattribution of self- ...

2021

Robot-Induced Mild Hallucinations And Passivity Experiences In Individuals With The 22Q11.2 Deletion Syndrome

Olaf Blanke, Laurent Frédéric Jenni, Eva Blondiaux, Maude Schneider, Fosco Bernasconi, Jevita Potheegadoo, Giedre Stripeikyte

OXFORD UNIV PRESS2020

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

Functional Disconnection Within The Presence Hallucination Network In Psychotic Patients With First-Rank Symptoms

Patric Hagmann, Olaf Blanke, Pierre Progin, Giulio Rognini, Nathan Quentin Faivre, Jevita Potheegadoo, Giedre Stripeikyte, Kim Do

OXFORD UNIV PRESS2019

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