A Dual-Mode Dynamic Model of the Vergence Eye Movement System

George K. Hung, John L. Semmlow, Kenneth J. Ciuffreda

Research output: Contribution to journalArticlepeer-review

120 Scopus citations


The disparity vergence eye movement system, long thought to be a simple continuous feedback system, has recently been shown to exhibit more complex dual-mode slow and fast responses. A model has been developed which simulates this behavior. The slow component accounts for the smooth following of slowly moving stimuli. The fast component has sampling and prediction mechanisms which account for the staircase-like step responses to fast ramp stimuli. Model simulation responses to pulse, step, step-pulse, ramp, and sinusoidal stimuli show good fit to these diverse experimental results. This robust and comprehensive model forms the basis for further understanding of the dynamic controlling mechanisms of the vergence system.

Original languageEnglish (US)
Pages (from-to)1021-1028
Number of pages8
JournalIEEE Transactions on Biomedical Engineering
Issue number11
StatePublished - Nov 1986

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering


Dive into the research topics of 'A Dual-Mode Dynamic Model of the Vergence Eye Movement System'. Together they form a unique fingerprint.

Cite this