Visual Stimulus Competition

University of Houston

Status: Unknown

Conditions: Visual Pathway Disorder

Treatments: Behavioral: Item spacing

Study type: Interventional

Funder types: Other

Identifiers

NCT03741595

STUDY00001197

Details and patient eligibility

About

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.

Full 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.

Enrollment: 10 estimated patients

Sex: All

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Normal Vision
• English language

Exclusion criteria

• Less than 20/20 in either eye
• Vision-affecting abnormalities (amblyopia, keratoconus, etc.)
• Ortho-K lenses

Trial design

Primary purpose: Basic Science

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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10 participants in 1 patient group

Single Arm

Experimental group

Treatment:

Behavioral: Item spacing