journal.pone.0229177.pdf (2.03 MB)
A comparison of post-saccadic oscillations in European-born and China-born British university undergraduates
journal contribution
posted on 2020-02-04, 14:21 authored by Diako Mardanbegi, Thom WilcocksonThom Wilcockson, Rebecca Killick, Baiqiang Xia, Hans Gellersen, Peter Sawyer, Trevor J. CrawfordPrevious research has revealed that people from different genetic, racial, biological,
and/or cultural backgrounds may display fundamental differences in eye-tracking
behavior. These differences may have a cognitive origin or they may be at a lower level
within the neurophysiology of the oculomotor network, or they may be related to
environment factors. In this paper we investigated one of the physiological aspects of
eye movements known as post-saccadic oscillations and we show that this type of eye
movement is very different between two different populations. We compared the
post-saccadic oscillations recorded by a video-based eye tracker between two groups of
participants: European-born and Chinese-born British students. We recorded eye
movements from a group of 42 Caucasians defined as White British or White Europeans
and 52 Chinese-born participants all with ages ranging from 18 to 36 during a
prosaccade task. The post-saccadic oscillations were extracted from the gaze data which
was compared between the two groups in terms of their first overshoot and undershoot.
The results revealed that the shape of the post-saccadic oscillations varied significantly
between the two groups which may indicate a difference in a multitude of genetic,
cultural, physiologic, anatomical or environmental factors. We further show that the
differences in the post-saccadic oscillations could influence the oculomotor
characteristics such as saccade duration. We conclude that genetic, racial, biological,
and/or cultural differences can affect the morphology of the eye movement data
recorded and should be considered when studying eye movements and oculomotor
fixation and saccadic behaviors.
Funding
EPSRC project EP/M006255/1 307 Monitoring Of Dementia using Eye Movements (MODEM)
History
School
- Sport, Exercise and Health Sciences
Published in
PLoS ONEVolume
15Issue
2Publisher
PLoSVersion
- VoR (Version of Record)
Rights holder
© The AuthorsPublisher statement
This is an Open Access Article. It is published by PLoS under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/Acceptance date
2020-02-02Publication date
2020-02-25Copyright date
2020eISSN
1932-6203Publisher version
Language
- en
Depositor
Dr Thom Wilcockson . Deposit date: 4 February 2020Article number
e0229177Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC