Jevita Potheegadoo

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Avec un parcours de neuropsychologue clinicienne, j’apprécie beaucoup de travailler avec des populations cliniques. J’ai appris et continue à apprendre énormément auprès des patients que je rencontre, non seulement sur la pathologie qui les touchent, mais aussi sur la manière d’appréhender la recherche et la clinique. Après une Licence en Psychologie à l’Université de Strasbourg (France), j’ai effectué en 2005 un Master Professionnel de Neuropsychologie clinique à l’Université de Caen Basse-Normandie (France). J’ai exercé comme neuropsychologue clinicienne en milieu hospitalier (unités de neurologie, et gériatrie), puis j’ai intégré le Département de Psychiatrie du CHU de Strasbourg. Alliant clinique et recherche, j’ai étudié au cours de ma thèse de Doctorat (soutenue en 2014) les troubles de la mémoire autobiographiques dans la schizophrénie (Unité INSERM). J’ai rejoint l’équipe du Prof. Olaf Blanke en 2016 en tant que collaboratrice scientifique.

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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

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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

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