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The parallel programming of landing position in saccadic eye movement sequences

McSorley, E., Gilchrist, I. D. and McCloy, R. (2020) The parallel programming of landing position in saccadic eye movement sequences. Journal of Vision, 20 (1). pp. 1-14. ISSN 1534-7362

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To link to this item DOI: 10.1167/jov.20.1.2

Abstract/Summary

Saccadic eye movements occur in sequences, gathering new information about the visual environment to support successful task completion. Here we examine the control of these saccadic sequences and specifically the extent to which the spatial aspects of the saccadic responses are programmed in parallel. We asked participants to saccade to a series of visual targets and, while they shifted their gaze around the display, we displaced select targets. We found that saccade landing position was deviated towards the previous location of the target suggesting that partial parallel programming of target location information was occurring. The saccade landing position was also affected by the new target location which demonstrates that the saccade landing position was also partially updated following the shift. This pattern was present even for targets that were the subject of the next fixation. Having a greater preview about the sequence path influenced saccade accuracy with saccades being less affected by relocations when there is less preview information. The results demonstrate that landing positions from a saccade sequence are programmed in parallel and combined with more immediate visual signals.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Psychology and Clinical Language Sciences > Department of Psychology
Faculty of Life Sciences > School of Psychology and Clinical Language Sciences > Perception and Action
ID Code:88592
Publisher:Association for Research in Vision and Ophthalmology (ARVO)

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