Visual Stimulus and Eye Movement

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

225 participants

Study Classification

OBSERVATIONAL

Study Start Date

1980-08-26

Study Completion Date

2008-08-06

Brief Summary

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This study is designed to understand how we see visual patterns and how these patterns lead to eye movements.

Normal volunteers participating in this study face a screen on which spots or patterns of light are projected. They are asked to respond to the patterns by voice, eye movements or hand movements. Eye and lid movements are recorded in one of the following ways:

1. Electro-oculogram \< small disc electrodes taped to the skin near each eye measure the eye movements as the eyes change position.
2. Infrared detector \< an infrared beam is reflected off the eye and picked up by detectors that record the eye movements.
3. Contact lens ring \< a smooth plastic ring is placed on the white of the eye surrounding the cornea and eye position is measured using a magnetic coil.

Study sessions last less than four hours.

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Detailed Description

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The purpose of this protocol is to study the physiology of the visuo-motor system in normal humans. This will be accomplished by recording eye movements and other responses (such as reaction time to bar press or verbal responses) to differing stimuli. The stimuli will be primarily visual but may include auditory or tactile stimuli.

Conditions

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Healthy

Eligibility Criteria

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Inclusion Criteria

Normal adult volunteers age 18 and over are included.

Only normal volunteers are studied under this protocol. Normal volunteers are recruited from the NIH volunteer office and the NIH web page. Women and minorities are actively recruited.

Minimum Eligible Age

18 Years

Maximum Eligible Age

59 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes