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A new method for detecting microsaccades in eye-movement data is presented, following a review of reported microsaccade properties between the 1940s and today. The review fo-cuses on the parameter ranges within which certain physical markers of microsaccades are thought to occur, as well as any features of microsaccades that have been stably reported over time. One feature of microsaccades, their binocularity, drives the new microsaccade detection method. The binocular correlation method for microsaccade detection is validated on two datasets of binocular eye-movements recorded using video-based systems: one col-lected as part of this study, and one from Nyström et al, 2017. Comparisons between detec-tion methods are made using precision-recall statistics. This confirms that the binocular cor-relation method performs well when compared to manual coders and performs favourably compared to the commonly used Engbert & Kliegl (2003) method with subsequent modifi-cations (Engbert & Mergenthaler, 2006). The binocular correlation microsaccade detection method is easy to implement and MATLAB code is made available to download.

Original publication

DOI

10.16910/jemr.12.6.13

Type

Journal article

Journal

Journal of Eye Movement Research

Publication Date

01/01/2019

Volume

12

Pages

1 - 22