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Updated: Jul 4, 2025

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Retinal eccentricity modulates saliency-driven but not relevance-driven visual selection.

Mieke Donk1,2, Elle van Heusden3,4, Christian N L Olivers3,4

  • 1Department of Experimental and Applied Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 5-7, 1081 BT, Amsterdam, the Netherlands. w.donk@vu.nl.

Attention, Perception & Psychophysics
|January 25, 2024
PubMed
Summary
This summary is machine-generated.

Eye movements during visual search are influenced by stimulus saliency and relevance. However, stimulus eccentricity significantly impacts selection, favoring closer items and reducing saliency

Keywords:
Eye movementsRelevanceRetinal eccentricitySaliencyVisual search

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Oculomotor Behavior

Background:

  • Visual search relies on stimulus saliency and relevance for eye movement control.
  • Visual field properties, including sensory representations and attention, vary with eccentricity.
  • The influence of eccentricity on stimulus selection during visual search is not fully understood.

Purpose of the Study:

  • To investigate how differences in eccentricity between competing visual stimuli affect selection driven by saliency and relevance.
  • To determine the interplay between stimulus saliency, relevance, and retinal eccentricity in guiding eye movements.

Main Methods:

  • Participants performed a visual search task, making a single eye movement to an orientation singleton target.
  • The target was presented with an orientation singleton distractor at varying eccentricities (same, one, or two eccentricity values apart).
  • Target saliency relative to the distractor was manipulated.

Main Results:

  • Stimulus selection was initially driven by saliency (within ~300 ms), followed by relevance.
  • Observers showed a bias towards selecting stimuli closer to the fovea, which increased with greater eccentricity differences.
  • This central selection bias reduced the impact of saliency on the final selection outcome, while relevance effects remained unaffected by eccentricity.

Conclusions:

  • Retinal eccentricity is a critical factor influencing visual selection behavior.
  • Eccentricity can modulate the contribution of stimulus saliency to eye movement control.
  • The findings highlight the complex interaction between stimulus-driven factors (saliency, relevance) and spatial factors (eccentricity) in guiding visual attention.