Target eccentricity and form influences disparity vergence eye movements responses: A temporal and dynamic analysis

Document Type

Article

Publication Date

1-1-2019

Abstract

This study sought to investigate whether stimulation to the fovea or the parafovea with different color combinations influenced the temporal and dynamic features of 4° disparity vergence step responses. Twelve unique types of stimuli were displayed within a haploscope presented along the participant's midsagittal plane. Vergence eye movement responses from fifteen naïve participants were recorded using video-based infrared eye tracking instrumentation. Latency and peak velocity from left and right eye movement responses were quantified. Results show that the type of stimulus projection (foveal versus parafoveal) significantly (p<0.001) influences the vergence response latency but did not impact peak velocity. Vergence responses to eccentric circles with 6° eccentricity targeting the parafovea resulted in a significantly faster response latency compared to vergence responses to a cross with 2° eccentricity stimuli targeting the fovea. Results have implications for the stimulus design of a variety of applications from virtual reality to vision therapy interventions.

Identifier

85079518646 (Scopus)

Publication Title

Journal of Eye Movement Research

External Full Text Location

https://doi.org/10.16910/jemr.12.4.7

e-ISSN

19958692

Issue

4

Volume

12

Grant

R01EY023261

Fund Ref

U.S. Department of Health and Human Services

This document is currently not available here.

Share

COinS