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Intermediate Visual Space Perception

Visual Mechanisms of Intermediate Distance Space Perception During Self-motion

Who can join

Ages 18 to 40 · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* Adults (up to 40 years of age)
* Children (18 years and older)
* Normal, or corrected-to-normal, visual acuity (at least 20/20)
* Stereo acuity (\<20 arc sec).

Exclusion Criteria:

* Self-reported history of visual and eye diseases
* Physical movement restrictions.
* Vulnerable populations such as pregnant women will be excluded owing to the extensive time commitment required of the subjects.

About the study

The ability to judge the locations of various objects from oneself during self-motion in the intermediate distance range (\~2-25m) is crucial for successful performance of activities of daily living, such as walking and driving. However, little is known about the mechanisms of visual space perception involved in judging distance, the focus of this project, in the planning and/or execution of self-motion in the natural 3D environment. The theoretical knowledge to be gained from this project will contribute to the scientific literature and provide insights into how eye and neurological defects could impair visual space perception, wayfinding, and mobility.

What is being tested

• Visual Stimuli for Space Perception (other)

Sponsor: University of Louisville · Participants: 180 · Started: Sep 30, 2021

Contact the study team

• Zijiang He, Ph.D. · Phone: 502-852-6779

Official record on ClinicalTrials.gov — NCT05419713

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.