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Breaking Object Correspondence Across Saccadic Eye Movements Deteriorates Object Recognition.

Christian H Poth1, Arvid Herwig1, Werner X Schneider1

  • 1Neuro-Cognitive Psychology, Department of Psychology, Bielefeld UniversityBielefeld, Germany; Cluster of Excellence Cognitive Interaction Technology, Bielefeld UniversityBielefeld, Germany.

Frontiers in Systems Neuroscience
|January 7, 2016
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Summary
This summary is machine-generated.

Breaking visual object correspondence across saccades impairs object recognition by competing for attention. Preserving object links enhances memory but hinders immediate recognition, impacting visual perception across eye movements.

Keywords:
attentionobject correspondencesaccadetranssaccadic memoryvisual stability

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Visual perception relies on processing information during eye fixations, interrupted by saccadic eye movements.
  • Maintaining object correspondence across saccades is crucial for transsaccadic memory and integrating visual information.
  • Object information typically updates and overwrites previous representations after a saccade, but this can be disrupted.

Purpose of the Study:

  • To investigate how breaking object correspondence across saccades affects postsaccadic object recognition.
  • To determine the attentional costs associated with preserving presaccadic object representations when correspondence is broken.
  • To explore the relationship between transsaccadic object correspondence and attentional resource allocation.

Main Methods:

  • Experiment 1: Saccade to a displaced object, with correspondence broken by a postsaccadic blank screen; measured displacement identification and letter recognition.
  • Experiment 2: Correspondence broken by altering object contrast polarity; measured postsaccadic letter recognition without displacement.
  • Utilized tasks involving letter identification within objects presented across saccades.

Main Results:

  • Breaking object correspondence via a blank screen improved displacement identification but impaired postsaccadic letter recognition.
  • Altering object contrast polarity to break correspondence also deteriorated postsaccadic letter recognition.
  • These results indicate that transsaccadic object correspondence is critical for object recognition across saccades.

Conclusions:

  • Transsaccadic object correspondence is a key factor influencing object recognition across eye movements.
  • Breaking correspondence may lead to competition for limited attentional resources between presaccadic and postsaccadic object representations.
  • Reduced attentional resources allocated to postsaccadic objects explain the observed deficits in recognition when correspondence is broken.