Dynamic disparity vergence eye movements: modeling and statistical analysis

Jia Long Horng, John L. Semmlow, George K. Hung, Kenneth J. Ciuffred

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

Abstract

For over a century, Hering's law has held that equal innervation from a single neural center controls the two eyes together and severed models of the vergence oculomotor system has been developed based on that law. Yet experimental data obtained from our laboratory often shows dynamic asymmetries between the two eyes. To investigate sources underlying these dissimilar responses, a mathematical model has been developed to simulate dynamic vergence responses. The model parameters, pulse gain, step gain and their ratios were analyzed statistically. The average Pulse-Step ratios from simulations of individual eye movements shows significant differences between left and right eye. This strongly suggests that the control of both eyes is from a binocular source. Nevertheless, a weak or zero correlation of Pulse-Step ratios was found between left and right eyes indicating that the asymmetrical eye responses are caused either by noise, that enters the signal pathway after it divides or by variation in the responsive of the neuromuscular plant.

Original languageEnglish (US)
Title of host publicationProceedings of the Annual Conference on Engineering in Medicine and Biology
EditorsAndrew Y.J. Szeto, Rangaraj M. Rangayyan
PublisherPubl by IEEE
Pages1381-1382
Number of pages2
Editionpt 3
ISBN (Print)0780313771
StatePublished - 1993
EventProceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 3 (of 3) - San Diego, CA, USA
Duration: Oct 28 1993Oct 31 1993

Publication series

NameProceedings of the Annual Conference on Engineering in Medicine and Biology
Numberpt 3
Volume15
ISSN (Print)0589-1019

Other

OtherProceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 3 (of 3)
CitySan Diego, CA, USA
Period10/28/9310/31/93

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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