Eye-tracker algorithms to detect saccades during static and dynamic tasks: a structured review

Samuel Stuart, Aodhan Hickey, Rodrigo Vitório, Karen Welman, Stacey Foo, David Keen, Alan Godfrey

Research output: Contribution to journalReview articlepeer-review

9 Citations (Scopus)
224 Downloads (Pure)

Abstract

Objective: Eye-tracking devices have become widely used as clinical assessment tools in a variety of applied-scientific fields to measure saccadic eye movements. With the emergence of multiple static and dynamic devices, the concurrent need for algorithm development and validation is paramount. Approach: This review assesses the prevalence of current saccade detection algorithms, their associated validation methodologies and the suitability of their application. Medline, Embase, PsychInfo, Scopus, IEEEXplore and ACM Digital Library databases were searched. Two independent reviewers and an adjudicator screened articles describing the detection of saccades from raw infrared/video-based eye-tracker data. Main results: Thirteen articles were screened and met the inclusion criteria. Overall, the majority of reviewed saccadic detection algorithms used simple velocity-based classifications with static eye-tracking systems. Studies demonstrated validity but are limited by the static nature of testing. Heterogeneity in system design, proprietary and bespoke algorithmic methods used, processing strategies, and outcome reporting is evident. Significance: This paper suggests the use of a more standardised methodology to facilitate experimental validity and improve comparison of results across studies.

Original languageEnglish
Article number02TR01
Number of pages16
JournalPhysiological Measurement
Volume40
Issue number2
DOIs
Publication statusPublished - 25 Feb 2019

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