August 2012
Volume 12, Issue 9
Vision Sciences Society Annual Meeting Abstract  |   August 2012
Distributed processing in a sequential scanning task
Author Affiliations
  • Hans Trukenbrod
    Department of Psychology, University of Potsdam, Potsdam, Germany
  • Ralf Engbert
    Department of Psychology, University of Potsdam, Potsdam, Germany
Journal of Vision August 2012, Vol.12, 1017. doi:
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      Hans Trukenbrod, Ralf Engbert; Distributed processing in a sequential scanning task. Journal of Vision 2012;12(9):1017. doi:

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      © ARVO (1962-2015); The Authors (2016-present)

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Current models of eye movement control are derived from theories assuming serial processing of single items or from theories based on parallel processing of multiple items at a time. This issue has persisted because most investigated paradigms generated data compatible with both serial and parallel models. Here we study eye movements in a sequential scanning task, where stimulus n indicates the position of the next stimulus n+1. We investigate whether eye movements are controlled by sequential attention shifts when the task requires serial order of processing. Our measures of distributed processing in the form of parafoveal-on-foveal effects, long-range modulations of target selection, and skipping saccades provide evidence against models strictly based on serial attention shifts. We conclude that our results lend support to parallel processing as a strategy for eye-movement control.

Meeting abstract presented at VSS 2012


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