NCT07427498Recruiting
The Role of Priors in Hallucinatory Perception in Parkinson's Disease
Exploratory Study on the Role of Prior Expectations in Hallucinatory Perceptions
Source: ClinicalTrials.gov · Last updated 30 Sept 2026
Brief summary (registry, in English)
The goal of this observational study is to better understand the mechanisms of hallucinations in patients with Parkinson's disease. The main question it aims to answer is: Do prior expectations increase the rate of false perceptions during a visual stimulus detection task more in Parkinson's disease patients with visual hallucinations compared to those without? Participants will undertake a computer task involving face detection and a battery of neuropsychological tests.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 60 (estimated)
- First submitted
- 12 Feb 2026
- Start date
- 28 Apr 2026
- Primary completion date
- 27 Apr 2028
- Lead sponsor
- University Hospital, Grenoble
- Diseases
- Parkinson disease
- NCT number
- NCT07427498
What you commit to
- Study type: Observational
- Planned participants: 60
- From 28 Apr 2026 to the primary completion date, 27 Apr 2028
- 2 sites in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Currently participating in another clinical or therapeutic trial involving the testing of a drug treatment.
- Individuals covered by Articles L1121-5 to L1121-8 of the French Public Health Code (Code de la Santé Publique), including:
- Pregnant women, women in labor, or breastfeeding mothers. Individuals deprived of liberty by judicial or administrative decision. Individuals receiving psychiatric care under Articles L. 3212-1 and L. 3213-1 (excluding those covered by Article L. 1121-8).
- Individuals admitted to a healthcare or social institution for purposes other than research.
- Minors or adults under legal guardianship or unable to express consent.
- \- Individuals with a hierarchical relationship to any professional involved in the study.
- Only for healthy volunteers:
- \- Personal history of diagnosed neurological disorders.
- Post-Inclusion Exclusion:
- \- Participants included in the study but found to have a MoCA score below 24 will be excluded from the study.
Other illness
- Inability to perform cognitive tests due to:
- Non-psychiatric (somatic) conditions likely to affect cognitive abilities. Peripheral sensory or motor deficits. Acute clinical conditions (e.g., agitation, impaired consciousness).
- Diagnosis of dementia.
Who the study is looking for
- Adults diagnosed with Parkinson's disease (with or without visual hallucinations) or healthy volunteers.
- Age 18 - 85 years.
- Consent to participate.
Age in the registry: 18 years to 85 years · Sex: All · Accepts healthy volunteers
Sites (2)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| CHU Grenoble Alpes Coordinator of this site? Confirm its status | Grenoble | France | Recruiting |
| Grenoble University Hospitals Coordinator of this site? Confirm its status | La Tronche | France | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.