Study of Brain Activity Underlying Predictive Mechanisms During the Perception of Visual Scenes
PREPER
Etude de l'activité cérébrale Sous-jacente Aux mécanismes prédictifs Lors de la Perception de scènes Visuelles
2 other identifiers
interventional
80
1 country
1
Brief Summary
This study aims to clarify the mechanisms by which the predictions we have about our visual environment influence the processing of expected or unexpected visual stimuli at the cerebral level.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable
Started Mar 2023
Typical duration for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
September 12, 2022
CompletedFirst Posted
Study publicly available on registry
November 9, 2022
CompletedStudy Start
First participant enrolled
March 20, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 1, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
March 1, 2025
CompletedMarch 26, 2024
March 1, 2024
2 years
September 12, 2022
March 25, 2024
Conditions
Outcome Measures
Primary Outcomes (1)
Performance (% of correct classification) of a support vector machine algorithm in classifying the category of objects and scenes based on electroencephalography signals evoked by the visual perception of expected and unexpected objects and scenes
We will use EEG data acquired while participants look at neutral objects and scenes of different categories to train a classifier in decoding the category of these objects and scenes. This classifier will then be tested using EEG data acquired while participants look at novel expected and unexpected objects and scenes. We will record the % accuracy of the classifier in this test phase.
Through study completion, an average of 1.5 year
Study Arms (1)
Healthy adults
EXPERIMENTALA single group of healthy adults will undergo all experimental conditions (within subject design)
Interventions
Participants will be displayed with photographs of scenes and objects which predictability and sharpness will be manipulated
Eligibility Criteria
You may qualify if:
- Participants between 18 and 35 years old
- Normal or corrected-to-normal visual acuity
- Ability to consent or oppose to the research
- No opposition to the research
You may not qualify if:
- Important visual impairments
- Neuropsychiatric pathology
- Use of drug or medication with neurocognitive effects
- Minors, or persons under psychiatric care, or protected persons
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Louise KAUFFMANN
Grenoble, Grenoble Cedex 9, 38043, France
MeSH Terms
Interventions
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Laurent VERCUEIL
Grenoble Alpes University Hospital
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NA
- Masking
- NONE
- Purpose
- BASIC SCIENCE
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
September 12, 2022
First Posted
November 9, 2022
Study Start
March 20, 2023
Primary Completion
March 1, 2025
Study Completion
March 1, 2025
Last Updated
March 26, 2024
Record last verified: 2024-03