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Role of Peripheral Vision in Scene Perception (PERISCE)

NCT05539508 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 120

Last updated 2022-09-14

No results posted yet for this study

Summary

Despite its low spatial resolution, peripheral vision is very useful for rapidly categorizing a visual scene. Low spatial frequencies of a visual stimulus available in peripheral vision would allow a coarse categorization of the scene and objects (deciding, for example, whether it is an urban or natural landscape). This first representation would then trigger predictive mechanisms which would subsequently guide a more detailed visual analysis in central vision. The psychophysical studies that the investigators have already conducted in this scientific context has been carried out under normal vision conditions. The objective of this project is to study the influence of peripheral vision on central vision with an original approach: What are the consequences of a loss of peripheral vision on the processing performed in central vision? The project will concern patients with glaucoma. This ophthalmic pathology particularly affects the peripheral retina and thus represents a good pathological cognitive model of a visual recognition system in which peripheral vision is less important. The investigators will conduct psychophysical studies with glaucomatous patients and healthy volunteers with normal vision. All participants will be required to perform a short experiment on a computer (15 minutes) where they will look at different photographs of scenes of different luminance and spatial frequencies. Participants will have to perform various tasks on these images using the keys on the keyboard.

Conditions

  • Primary Open-angle Glaucoma (POAG)

Interventions

BEHAVIORAL

Psychophysical evaluation

All participants will be required to perform a short experiment on a computer (15 minutes) where they will look at different photographs of scenes of different luminance and spatial frequencies. They will have to perform various tasks on these images using the keys on the keyboard.

Sponsors & Collaborators

  • University Hospital, Grenoble

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2022-10-01
Primary Completion
2026-07-01
Completion
2027-07-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05539508 on ClinicalTrials.gov