Measuring miniature eye movements by means of a SQUID magnetometer

M.J. Peters; Z. Dunajski; T.E.M. Meijzssen; E.W. Breukink; J.J. Wevers-Henke

doi:10.1016/0011-2275(82)90055-8

Measuring miniature eye movements by means of a SQUID magnetometer

M.J. Peters, Z. Dunajski, T.E.M. Meijzssen, E.W. Breukink, J.J. Wevers-Henke

University of Twente

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Abstract

A new technique to measure small eye movements is reported. The precise recording of human eye movements is necessary for research on visual fatigue induced by visual display units.1 So far all methods used have disadvantages: especially those which are sensitive or are rather painful.2,3 Our method is based on a transformation of mechanical vibrations into magnetic flux variations. In order to do this a small magnet is embedded in a close-fitting soft contact lens. The magnetic flux variations caused by eyeball movements during fixation are measured by means of a SQUID magnetometer. The recordings show the typical fixation pattern of a human eye. This pattern is composed of three kinds of movements: saccades, drift and microtremor. The last-mentioned type of movements are displacements in the order of 2 μm. It is possible to distinguish between movements which are perpendicular to each other.

Original language	English
Pages (from-to)	267-270
Journal	Cryogenics
Volume	22
Issue number	6
DOIs	https://doi.org/10.1016/0011-2275(82)90055-8
Publication status	Published - 1982

Keywords

Superconducting devices
SQUID
Magnetometer
Eye movement

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title = "Measuring miniature eye movements by means of a SQUID magnetometer",

abstract = "A new technique to measure small eye movements is reported. The precise recording of human eye movements is necessary for research on visual fatigue induced by visual display units.1 So far all methods used have disadvantages: especially those which are sensitive or are rather painful.2,3 Our method is based on a transformation of mechanical vibrations into magnetic flux variations. In order to do this a small magnet is embedded in a close-fitting soft contact lens. The magnetic flux variations caused by eyeball movements during fixation are measured by means of a SQUID magnetometer. The recordings show the typical fixation pattern of a human eye. This pattern is composed of three kinds of movements: saccades, drift and microtremor. The last-mentioned type of movements are displacements in the order of 2 μm. It is possible to distinguish between movements which are perpendicular to each other.",

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AU - Peters, M.J.

AU - Dunajski, Z.

AU - Meijzssen, T.E.M.

AU - Breukink, E.W.

AU - Wevers-Henke, J.J.

PY - 1982

Y1 - 1982

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AB - A new technique to measure small eye movements is reported. The precise recording of human eye movements is necessary for research on visual fatigue induced by visual display units.1 So far all methods used have disadvantages: especially those which are sensitive or are rather painful.2,3 Our method is based on a transformation of mechanical vibrations into magnetic flux variations. In order to do this a small magnet is embedded in a close-fitting soft contact lens. The magnetic flux variations caused by eyeball movements during fixation are measured by means of a SQUID magnetometer. The recordings show the typical fixation pattern of a human eye. This pattern is composed of three kinds of movements: saccades, drift and microtremor. The last-mentioned type of movements are displacements in the order of 2 μm. It is possible to distinguish between movements which are perpendicular to each other.

KW - Superconducting devices

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KW - Magnetometer

KW - Eye movement

U2 - 10.1016/0011-2275(82)90055-8

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JO - Cryogenics

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ER -

Measuring miniature eye movements by means of a SQUID magnetometer

Abstract

Keywords

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