Jevita Potheegadoo

Biography

As a clinical neuropsychologist, I appreciate working with clinical populations, as I constantly learn a lot from the patients, enriching my knowledge not only on the illness but also on clinical and research practice. I graduated from the University of Strasbourg (France), and obtained a Master's degree in clinical neuropsychology in 2005 from the University of Caen Basse-Normandie (France). I integrated the Psychiatry Department of the University Hospitals of Strasbourg as a neuropsychologist and pursued both clinical and research work on schizophrenia (INSERM unit). I investigated autobiographical memory impairment and self disorders in patients with schizophrenia, and obtained a Ph.D. in neuroscience (University of Strasbourg) in 2014. I joined the Blanke Lab (LNCO) as scientific collaborator in 2016.

Official source

https://people.epfl.ch/jevita.potheegadoo

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

Fosco Bernasconi, Olaf Blanke, 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 disease (PD). Presence hallucination (PH) is frequent in neurodegenerative disease, shares several aspects with PB, and is the sensation that someone is nearby, behind or next to the patient (when nobody is actually there). Recent work developed a sensorimotor method to robotically induce PH (robot-induced PH, riPH) and demonstrated that a subgroup of PD patients showed abnormal sensitivity for riPH.

2023

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

Olaf Blanke, Jevita Potheegadoo, Neza Vehar

2022

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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 and assessment highly challenging. A major shortcoming in hallucination research is the absence of methods able to induce specific and short-lasting hallucinations, which resemble clinical hallucinations, can be elicited repeatedly and vary across experimental conditions. By integrating clinical observations and recent advances in cognitive neuroscience with robotics, we have designed a novel device and sensorimotor method able to repeatedly induce a specific, clinically relevant hallucination: presence hallucination. Presence hallucinations are induced by applying specific conflicting (spatiotemporal) sensorimotor stimulation including an upper extremity and the torso of the participant. Another, MRI-compatible, robotic device using similar sensorimotor stimulation permitted the identification of the brain mechanisms of these hallucinations. Enabling the identification of behavioral and a frontotemporal neural biomarkers of hallucinations, under fully controlled experimental conditions and in real-time, this method can be applied in healthy participants as well as patients with schizophrenia, neurodegenerative disease or other hallucinations. The execution of these protocols requires intermediate-level skills in cognitive neuroscience and MRI processing, as well as minimal coding experience to control the robotic device. These protocols take ~3 h to be completed.

2022