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Performance Deficits in a Voluntary Saccade Task in Chinese “Express Saccade Makers”

Differences in behaviour and cognition have been observed in different human populations. It has been reported that in various types of complex visual task, eye movement patterns differ systematically between Chinese and non-Chinese participants, an observation that has been related to differences i...

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Autores principales: Knox, Paul C., Amatya, Nabin, Jiang, Xiaoyu, Gong, Qyong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3472994/
https://www.ncbi.nlm.nih.gov/pubmed/23091639
http://dx.doi.org/10.1371/journal.pone.0047688
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author Knox, Paul C.
Amatya, Nabin
Jiang, Xiaoyu
Gong, Qyong
author_facet Knox, Paul C.
Amatya, Nabin
Jiang, Xiaoyu
Gong, Qyong
author_sort Knox, Paul C.
collection PubMed
description Differences in behaviour and cognition have been observed in different human populations. It has been reported that in various types of complex visual task, eye movement patterns differ systematically between Chinese and non-Chinese participants, an observation that has been related to differences in culture between groups. However, we confirm here that, in healthy, naïve adult Chinese participants, a far higher proportion (22%) than expected (1–5%) exhibit a pattern of reflexive eye movement behaviour (high numbers of low latency express saccades) in circumstances designed to inhibit such responses (prosaccade overlap tasks). These participants are defined as “express saccade makers” (ESMs). We then show using the antisaccade paradigm, which requires the inhibition of reflexive responses and the programming and execution of voluntary saccades, that the performance of ESMs is compromised; they have higher antisaccade directional error rates, and the latency distributions of their error saccades again exhibit a higher proportion of low latency express saccade errors consistent with a reduced ability to inhibit reflexive responses. These results are difficult to reconcile with a cultural explanation as they relate to important and specific performance differences within a particular population. They suggest a potential unexpected confound relevant to those studies of Chinese versus other groups which have investigated group differences using oculomotor measures, and explained them in terms of culture. The confirmation of higher numbers of ESMs among Chinese participants provides new opportunities for examining oculomotor control.
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spelling pubmed-34729942012-10-22 Performance Deficits in a Voluntary Saccade Task in Chinese “Express Saccade Makers” Knox, Paul C. Amatya, Nabin Jiang, Xiaoyu Gong, Qyong PLoS One Research Article Differences in behaviour and cognition have been observed in different human populations. It has been reported that in various types of complex visual task, eye movement patterns differ systematically between Chinese and non-Chinese participants, an observation that has been related to differences in culture between groups. However, we confirm here that, in healthy, naïve adult Chinese participants, a far higher proportion (22%) than expected (1–5%) exhibit a pattern of reflexive eye movement behaviour (high numbers of low latency express saccades) in circumstances designed to inhibit such responses (prosaccade overlap tasks). These participants are defined as “express saccade makers” (ESMs). We then show using the antisaccade paradigm, which requires the inhibition of reflexive responses and the programming and execution of voluntary saccades, that the performance of ESMs is compromised; they have higher antisaccade directional error rates, and the latency distributions of their error saccades again exhibit a higher proportion of low latency express saccade errors consistent with a reduced ability to inhibit reflexive responses. These results are difficult to reconcile with a cultural explanation as they relate to important and specific performance differences within a particular population. They suggest a potential unexpected confound relevant to those studies of Chinese versus other groups which have investigated group differences using oculomotor measures, and explained them in terms of culture. The confirmation of higher numbers of ESMs among Chinese participants provides new opportunities for examining oculomotor control. Public Library of Science 2012-10-16 /pmc/articles/PMC3472994/ /pubmed/23091639 http://dx.doi.org/10.1371/journal.pone.0047688 Text en © 2012 Knox et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Knox, Paul C.
Amatya, Nabin
Jiang, Xiaoyu
Gong, Qyong
Performance Deficits in a Voluntary Saccade Task in Chinese “Express Saccade Makers”
title Performance Deficits in a Voluntary Saccade Task in Chinese “Express Saccade Makers”
title_full Performance Deficits in a Voluntary Saccade Task in Chinese “Express Saccade Makers”
title_fullStr Performance Deficits in a Voluntary Saccade Task in Chinese “Express Saccade Makers”
title_full_unstemmed Performance Deficits in a Voluntary Saccade Task in Chinese “Express Saccade Makers”
title_short Performance Deficits in a Voluntary Saccade Task in Chinese “Express Saccade Makers”
title_sort performance deficits in a voluntary saccade task in chinese “express saccade makers”
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3472994/
https://www.ncbi.nlm.nih.gov/pubmed/23091639
http://dx.doi.org/10.1371/journal.pone.0047688
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