Individual differences in human eye movements: an oculomotor signature?

Bargary, Gary, Bosten, Jenny M, Goodbourn, Patrick T, Lawrance-Owen, Adam J, Hogg, Ruth E and Mollon, J D (2017) Individual differences in human eye movements: an oculomotor signature? Vision Research. ISSN 0042-6989

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Abstract

Human eye movements are stereotyped and repeatable, but how specific to a normal individual are the quantitative properties of his or her eye movements? We recorded saccades, anti-saccades and smooth-pursuit eye movements in a sample of over 1000 healthy young adults. A randomly selected subsample (10%) of participants were re-tested on a second occasion after a median interval of 18.8 days, allowing us to estimate reliabilities. Each of several derived measures, including latencies, accuracies, velocities, and left-right asymmetries, proved to be very reliable. We give normative means and distributions for each measure and describe the pattern of correlations amongst them. We identify several measures that exhibit significant sex differences. The profile of our oculomotor measures for an individual constitutes a personal oculomotor signature that distinguishes that individual from most other members of the sample of 1000.

Item Type: Article
Schools and Departments: School of Psychology > Psychology
Depositing User: Ellena Adams
Date Deposited: 11 May 2017 11:30
Last Modified: 24 Aug 2017 02:35
URI: http://sro.sussex.ac.uk/id/eprint/68056

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