Decomposition of vergence dynamics using independent component analysis

Eun Kim, Tara L. Alvarez, Yelda Alkan, Rajbir Jaswal, Bharat B. Biswal, Vincent R. Vicci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationICTAI 2009 - 21st IEEE International Conference on Tools with Artificial Intelligence
Pages766-770
Number of pages5
DOIs
StatePublished - 2009
Event21st IEEE International Conference on Tools with Artificial Intelligence, ICTAI 2009 - Newark, NJ, United States
Duration: Nov 2 2009Nov 5 2009

Publication series

NameProceedings - International Conference on Tools with Artificial Intelligence, ICTAI
ISSN (Print)1082-3409

Other

Other21st IEEE International Conference on Tools with Artificial Intelligence, ICTAI 2009
CountryUnited States
CityNewark, NJ
Period11/2/0911/5/09

All Science Journal Classification (ASJC) codes

  • Software
  • Artificial Intelligence
  • Computer Science Applications

Keywords

  • Convergence insufficiency
  • ICA
  • Vergence

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