Effects of visual distractors on vergence eye movements

Journal of Vision
Chang YaramothuTara L Alvarez

Abstract

Visual attention is an important aspect of everyday life, which can be incorporated in the assessment of many diagnoses. Another important characteristic of visual attention is that it can be improved via therapeutic interventions. Fifteen subjects with normal binocular vision were presented with visual distractor stimuli at various spatial locations while initiating disparity vergence eye movements (inward or outward rotation of eyes) within a haploscope system. First, a stationary distractor stimulus was presented in either the far, middle, or near visual spaces while the subjects were instructed to follow a target stimulus that was either stationary, converging (moving toward subject), or diverging (moving away from subject). For the second experiment, a dynamic distractor stimulus within the far, middle, or near visual space that was converging or diverging was presented while the target stimulus was also converging or diverging. The subjects were instructed to visually follow the target stimulus and ignore the distractor stimulus. The vergence responses had a final vergence angle between the target and distractor stimuli which has been termed a center of gravity (CoG) effect. Statistically significant differences were obse...Continue Reading

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Jun 2, 2017·Scientific Reports·Tara L AlvarezBérangère Granger-Donetti

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Citations

Mar 5, 2019·Journal of Neurotrauma·Chang YaramothuTara L Alvarez
Oct 20, 2020·Frontiers in Psychology·Juan-Carlos RojasManuel Contero

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Software Mentioned

Haploscope
LabVIEW TM
MATLAB
MathWorks

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