Decomposition of vergence dynamics using independent component analysis

Document Type

Conference Proceeding

Publication Date

12-1-2009

Abstract

This study investigated the underlying components of vergence responses in binocularly healthy individuals and subjects with convergence insufficiency (CI). Convergent and divergent eye movements were recorded from seven subjects using step stimuli. In addition, four CI subjects participated in six weeks of vision rehabilitation. The goal of this study was to use an independent component analysis (ICA) algorithm to dissect the vergence responses into two underlying components (transient and sustained) for comparison. Preliminary data suggest the healthy controls have greater peak velocity and the magnitude of the transient component was larger compared to patients with CI. After training, the peak velocity and magnitude of the transient component increased for the CI patients and these behaviors were maintained after the training. Data suggest that training modifies the cortical signal responsible for generating the transient component signal and these changes are sustained post rehabilitation. © 2009 IEEE.

Identifier

77949510370 (Scopus)

ISBN

[9781424456192]

Publication Title

Proceedings International Conference on Tools with Artificial Intelligence Ictai

External Full Text Location

https://doi.org/10.1109/ICTAI.2009.100

ISSN

10823409

First Page

766

Last Page

770

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