Sampling rate influences saccade detection in mobile eye tracking of a reading task
The purpose of this study was to compare saccade detection characteristics in two mobile eye trackers with different sampling rates in a natural task. Gaze data of 11 participants were recorded in one 60 Hz and one 120 Hz mobile eye tracker and compared directly to the saccades detected by a 1000 HZ...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-06-01
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| Series: | Journal of Eye Movement Research |
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| Online Access: | https://bop.unibe.ch/JEMR/article/view/3520 |
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| _version_ | 1849401997402308608 |
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| author | Alexander Leube Katharina Rifai Siegfried Wahl |
| author_facet | Alexander Leube Katharina Rifai Siegfried Wahl |
| author_sort | Alexander Leube |
| collection | DOAJ |
| description | The purpose of this study was to compare saccade detection characteristics in two mobile eye trackers with different sampling rates in a natural task. Gaze data of 11 participants were recorded in one 60 Hz and one 120 Hz mobile eye tracker and compared directly to the saccades detected by a 1000 HZ stationary tracker while a reading task was performed. Saccades and fixations were detected using a velocity based algorithm and their properties analyzed. Results showed that there was no significant difference in the number of detected fixations but mean fixation durations differed between the 60 Hz mobile and the stationary eye tracker. The 120 Hz mobile eye tracker showed a significant increase in the detection rate of saccades and an improved estimation of the mean saccade duration, compared to the 60 Hz eye tracker. To conclude, for the detection and analysis of fast eye movements, such as saccades, it is better to use a 120 Hz mobile eye tracker. |
| format | Article |
| id | doaj-art-8bd6d6d71e1b4e688f383bce48dfb226 |
| institution | Kabale University |
| issn | 1995-8692 |
| language | English |
| publishDate | 2017-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Eye Movement Research |
| spelling | doaj-art-8bd6d6d71e1b4e688f383bce48dfb2262025-08-20T03:37:38ZengMDPI AGJournal of Eye Movement Research1995-86922017-06-0110310.16910/jemr.10.3.3Sampling rate influences saccade detection in mobile eye tracking of a reading taskAlexander Leube0Katharina Rifai1Siegfried Wahl2Institute for Ophthalmic Research, Eberhard Karls University TuebingenInstitute for Ophthalmic Research, Eberhard Karls University TuebingenInstitute for Ophthalmic Research, Eberhard Karls University TuebingenThe purpose of this study was to compare saccade detection characteristics in two mobile eye trackers with different sampling rates in a natural task. Gaze data of 11 participants were recorded in one 60 Hz and one 120 Hz mobile eye tracker and compared directly to the saccades detected by a 1000 HZ stationary tracker while a reading task was performed. Saccades and fixations were detected using a velocity based algorithm and their properties analyzed. Results showed that there was no significant difference in the number of detected fixations but mean fixation durations differed between the 60 Hz mobile and the stationary eye tracker. The 120 Hz mobile eye tracker showed a significant increase in the detection rate of saccades and an improved estimation of the mean saccade duration, compared to the 60 Hz eye tracker. To conclude, for the detection and analysis of fast eye movements, such as saccades, it is better to use a 120 Hz mobile eye tracker.https://bop.unibe.ch/JEMR/article/view/3520eye movementeye trackingsaccadesreading |
| spellingShingle | Alexander Leube Katharina Rifai Siegfried Wahl Sampling rate influences saccade detection in mobile eye tracking of a reading task Journal of Eye Movement Research eye movement eye tracking saccades reading |
| title | Sampling rate influences saccade detection in mobile eye tracking of a reading task |
| title_full | Sampling rate influences saccade detection in mobile eye tracking of a reading task |
| title_fullStr | Sampling rate influences saccade detection in mobile eye tracking of a reading task |
| title_full_unstemmed | Sampling rate influences saccade detection in mobile eye tracking of a reading task |
| title_short | Sampling rate influences saccade detection in mobile eye tracking of a reading task |
| title_sort | sampling rate influences saccade detection in mobile eye tracking of a reading task |
| topic | eye movement eye tracking saccades reading |
| url | https://bop.unibe.ch/JEMR/article/view/3520 |
| work_keys_str_mv | AT alexanderleube samplingrateinfluencessaccadedetectioninmobileeyetrackingofareadingtask AT katharinarifai samplingrateinfluencessaccadedetectioninmobileeyetrackingofareadingtask AT siegfriedwahl samplingrateinfluencessaccadedetectioninmobileeyetrackingofareadingtask |