Saccade reaction time asymmetries during task-switching in pursuit tracking

We investigate how smooth pursuit eye movements affect the latencies of task-switching saccades. Participants had to alternate their foveal vision between a continuous pursuit task in the display center and a discrete object discrimination task in the periphery. The pursuit task was either carried o...

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Main Authors:	Bieg, Hans-Joachim, Bresciani, Jean-Pierre, Bülthoff, Heinrich H., Chuang, Lewis L.
Format:	Online
Language:	English
Published:	Springer Berlin Heidelberg 2013
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3778222/

id	pubmed-3778222
recordtype	oai_dc
spelling	pubmed-37782222013-09-25 Saccade reaction time asymmetries during task-switching in pursuit tracking Bieg, Hans-Joachim Bresciani, Jean-Pierre Bülthoff, Heinrich H. Chuang, Lewis L. Research Article We investigate how smooth pursuit eye movements affect the latencies of task-switching saccades. Participants had to alternate their foveal vision between a continuous pursuit task in the display center and a discrete object discrimination task in the periphery. The pursuit task was either carried out by following the target with the eyes only (ocular) or by steering an on-screen cursor with a joystick (oculomanual). We measured participants’ saccadic reaction times (SRTs) when foveal vision was shifted from the pursuit task to the discrimination task and back to the pursuit task. Our results show asymmetries in SRTs depending on the movement direction of the pursuit target: SRTs were generally shorter in the direction of pursuit. Specifically, SRTs from the pursuit target were shorter when the discrimination object appeared in the motion direction. SRTs to pursuit were shorter when the pursuit target moved away from the current fixation location. This result was independent of the type of smooth pursuit behavior that was performed by participants (ocular/oculomanual). The effects are discussed in regard to asymmetries in attention and processes that suppress saccades at the onset of pursuit. Springer Berlin Heidelberg 2013-08-10 2013 /pmc/articles/PMC3778222/ /pubmed/23934441 http://dx.doi.org/10.1007/s00221-013-3651-9 Text en © The Author(s) 2013 Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Bieg, Hans-Joachim Bresciani, Jean-Pierre Bülthoff, Heinrich H. Chuang, Lewis L.
spellingShingle	Bieg, Hans-Joachim Bresciani, Jean-Pierre Bülthoff, Heinrich H. Chuang, Lewis L. Saccade reaction time asymmetries during task-switching in pursuit tracking
author_facet	Bieg, Hans-Joachim Bresciani, Jean-Pierre Bülthoff, Heinrich H. Chuang, Lewis L.
author_sort	Bieg, Hans-Joachim
title	Saccade reaction time asymmetries during task-switching in pursuit tracking
title_short	Saccade reaction time asymmetries during task-switching in pursuit tracking
title_full	Saccade reaction time asymmetries during task-switching in pursuit tracking
title_fullStr	Saccade reaction time asymmetries during task-switching in pursuit tracking
title_full_unstemmed	Saccade reaction time asymmetries during task-switching in pursuit tracking
title_sort	saccade reaction time asymmetries during task-switching in pursuit tracking
description	We investigate how smooth pursuit eye movements affect the latencies of task-switching saccades. Participants had to alternate their foveal vision between a continuous pursuit task in the display center and a discrete object discrimination task in the periphery. The pursuit task was either carried out by following the target with the eyes only (ocular) or by steering an on-screen cursor with a joystick (oculomanual). We measured participants’ saccadic reaction times (SRTs) when foveal vision was shifted from the pursuit task to the discrimination task and back to the pursuit task. Our results show asymmetries in SRTs depending on the movement direction of the pursuit target: SRTs were generally shorter in the direction of pursuit. Specifically, SRTs from the pursuit target were shorter when the discrimination object appeared in the motion direction. SRTs to pursuit were shorter when the pursuit target moved away from the current fixation location. This result was independent of the type of smooth pursuit behavior that was performed by participants (ocular/oculomanual). The effects are discussed in regard to asymmetries in attention and processes that suppress saccades at the onset of pursuit.
publisher	Springer Berlin Heidelberg
publishDate	2013
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3778222/
_version_	1612012984541904896

Saccade reaction time asymmetries during task-switching in pursuit tracking

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