Theory of Double Magnetic Induction (DMI) for Measuring Eye Movements: Correction for Nonlinearity and Simple Calibration in Two Dimensions

Jelte E. Bos, Jos P H Reulen, Harrie J. Boersma, Bert J. Ditters

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

This paper presents an analytical theory approach based on the concept of mutual inductance to describe the double magnetic induction method for measuring eye movements. A polynomial approach to quantify the method's inherent nonlinearity is evaluated. The solutions to the one-dimensional problem are further elaborated, giving a simple approximation of the two-dimensional problem. The two-dimensional approximation provides an easily applicable tool for DMI calibration. According to this theory, calibrations need only be performed parallel to the two main magnetic fields. As a final result, eye rotations are given in any direction as a function of the two measured induction voltages.

Original languageEnglish
Pages (from-to)733-739
Number of pages7
JournalIEEE Transactions on Biomedical Engineering
Volume35
Issue number9
DOIs
Publication statusPublished - 1 Jan 1988

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