Visuo-Ocular Performance During Vestibular Stimulation
Abstract
The objective of this study is to enhance knowledge regarding spatial orientation and disorientation in environments characterized by combined stress, namely simultaneous visual and vestibular stimulation. This study will test the hypothesis that target acquisition, ocular tracking, and visual search are degraded by vestibular stimulation using off-vertical axis rotation. Target acquisition stimuli will consist of a spot moving suddenly to a new location in a pseudo-random fashion; ocular tracking stimuli will consist of constant velocity target motion. Visual search will combine these stimuli. Eye movements will be recorded using the magnetic scleral search coil method. Analysis of the data will yield measures of saccadic latency and accuracy, and ocular pursuit gain. Calculated performance measures will be compared across visual and vestibular stimulus conditions with analysis of variance. The goal of the first year of research was to develop protocols and assess visual-vestibular interaction. As proposed for the first year, 15 normal subjects (8F, 7M) have been tested with the entire protocol of vestibular, visual, and visual- vestibular stimuli. With these first year studies completed, studies for the second year have begun.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1994
- Accession Number
- ADA284103
Entities
People
- James A. Carl
- Joseph M. Furman
Organizations
- University of Pittsburgh