On the structure of measurement noise in eye-tracking

Charles A. Coey, Sebastian Wallot, Michael J. Richardson, Guy Van Orden

Research output: Contribution to journalArticle

22 Citations (Scopus)
4 Downloads (Pure)

Abstract

Past research has discovered fractal structure in eye movement variability and interpreted this result as having theoretical ramifications. No research has, however, investigated how properties of the eye-tracking instrument might affect the structure of measurement varia-bility. The current experiment employed fractal and multifractal methods to investigate whether an eye-tracker produced intrinsic random variation and how features of the data recording procedure affected the structure measurement variability. The results of this experiment revealed that the structure of variation from a fake eye was indeed random and uncorrelated in contrast to the fractal structure from a fixated, real human eye. Moreover, the results demonstrated that data-averaging generally changes the structure of variation, introducing spurious structure into eye movement variability.
Original languageEnglish
Article number5
Pages (from-to)1-10
Number of pages10
JournalJournal of Eye Movement Research
Volume5
Issue number4
DOIs
Publication statusPublished - 2012
Externally publishedYes

Bibliographical note

Copyright the Author(s) 2012. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • eye-tracking
  • measurement noise
  • fractal structure
  • data averaging

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