On the Structure of Measurement Noise in Eye-Tracking
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 experim...
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| Format: | Article |
| Language: | English |
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MDPI AG
2012-09-01
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| Series: | Journal of Eye Movement Research |
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| Online Access: | https://bop.unibe.ch/JEMR/article/view/2343 |
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| _version_ | 1850237463268687872 |
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| author | Charles A. Coey Sebastian Wallot Michael J. Richardson Guy Van Orden |
| author_facet | Charles A. Coey Sebastian Wallot Michael J. Richardson Guy Van Orden |
| author_sort | Charles A. Coey |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-3086d1a524d74ce798907806599bdb07 |
| institution | OA Journals |
| issn | 1995-8692 |
| language | English |
| publishDate | 2012-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Eye Movement Research |
| spelling | doaj-art-3086d1a524d74ce798907806599bdb072025-08-20T02:01:43ZengMDPI AGJournal of Eye Movement Research1995-86922012-09-015410.16910/jemr.5.4.5On the Structure of Measurement Noise in Eye-TrackingCharles A. Coey0Sebastian Wallot1Michael J. Richardson2Guy Van Orden3Perceptual-Motor Dynamics Lab, Center for Cognition, Action, and Perception, University of CincinnatiMINDLab, Aarhus University, and Center for Cognition, Action, and Perception, University of CincinnatiPerceptual-Motor Dynamics Lab, Center for Cognition, Action, and Perception, University of CincinnatiCenter for Cognition, Action, and Perception, University of CincinnatiPast 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.https://bop.unibe.ch/JEMR/article/view/2343eye-trackingmeasurement noisefractal structuredata averaging |
| spellingShingle | Charles A. Coey Sebastian Wallot Michael J. Richardson Guy Van Orden On the Structure of Measurement Noise in Eye-Tracking Journal of Eye Movement Research eye-tracking measurement noise fractal structure data averaging |
| title | On the Structure of Measurement Noise in Eye-Tracking |
| title_full | On the Structure of Measurement Noise in Eye-Tracking |
| title_fullStr | On the Structure of Measurement Noise in Eye-Tracking |
| title_full_unstemmed | On the Structure of Measurement Noise in Eye-Tracking |
| title_short | On the Structure of Measurement Noise in Eye-Tracking |
| title_sort | on the structure of measurement noise in eye tracking |
| topic | eye-tracking measurement noise fractal structure data averaging |
| url | https://bop.unibe.ch/JEMR/article/view/2343 |
| work_keys_str_mv | AT charlesacoey onthestructureofmeasurementnoiseineyetracking AT sebastianwallot onthestructureofmeasurementnoiseineyetracking AT michaeljrichardson onthestructureofmeasurementnoiseineyetracking AT guyvanorden onthestructureofmeasurementnoiseineyetracking |