Visual Pathway Disorder
Conditions
Brief summary
In this study, we will use behavioral methods to investigate several types of interactions that occur when visual stimuli conflict, such as when objects are presented nearby to each other, or to separate eyes. We will target purely sensory aspects by using simple geometric shapes: letters and lines. Our outcome measure will be performance thresholds.
Detailed description
Participants will be shown visual stimuli on displays and be asked to identify some aspect of the stimuli: their orientation and/or color, the existence of binocular suppression, etc. In different blocks, stimuli will be manipulated in different ways to characterize basic aspects of visual processing. For example, the contrast, color, and/or spatial layout of stimuli will be varied.
Interventions
BEHAVIORALItem spacing
Spatial proximity of items to one another
Sponsors
University of Houston
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Healthy volunteers
Yes
Inclusion criteria
* Normal Vision * English language
Exclusion criteria
* Less than 20/20 in either eye * Vision-affecting abnormalities (amblyopia, keratoconus, etc.) * Ortho-K lenses
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Detection probability | 2 hours | Ability to detect a target stimulus as a function of flanker proximity |
Countries
United States
Outcome results
None listed