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Detection of Fixations and Smooth Pursuit Movements in High-speed Eye-tracking Data by Linnéa Larsson; Marcus Nyström; Richard Andersson; Martin Stridh is a Medicine article available to read on EtoBox.

What is Detection of Fixations and Smooth Pursuit Movements in High-speed Eye-tracking Data about?

A novel algorithm for the detection of fixations and smooth pursuit movements in high-speed eyetracking data is proposed, which uses a three-stage procedure to divide the intersaccadic intervals into a sequence of fixation and smooth pursuit events. The first stage performs a preliminary segmentation while the latter two stages evaluate the characteristics of each such segment and reorganize the preliminary segments into fixations and smooth pursuit events. Five different performance measures are calculated to investigate different aspects of the algorithm's behavior. The algorithm is compared to the current state-of-the-art (I-VDT and the algorithm in ), as well as to annotations by two experts. The proposed algorithm performs considerably better (average Cohen's kappa 0.42) than the I-VDT algorithm (average Cohen's kappa 0.20) and the algorithm in (average Cohen's kappa 0.16), when compared to the experts' annotations.

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Author

Linnéa Larsson; Marcus Nyström; Richard Andersson; Martin Stridh

Publisher

Elsevier BV

Published

2015

Language

EN

Field

Medicine (Physical Sciences)