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An object-based cost of visual filtering.

Z Chen1

  • 1Princeton University, New Jersey, USA. zhechen@olemiss.edu

Perception & Psychophysics
|July 26, 2000
PubMed
Summary
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Object-based attention shows a filtering cost when distractors are between targets. Faster processing occurs when distractors flank targets, suggesting attention is object-based.

Area of Science:

  • Cognitive Psychology
  • Visual Attention

Background:

  • Object-based attention is supported by various paradigms.
  • Limited research exists on the relationship between target processing efficiency and distractor quantity.

Purpose of the Study:

  • To investigate the impact of intervening distractors on object-based attention.
  • To determine if distractor number affects target processing efficiency.

Main Methods:

  • Five experiments were conducted where participants judged target shape heights.
  • Perceptual set was manipulated to create intervening vs. flanking distractors.
  • The number of intervening distractors was varied directly in subsequent experiments.

Main Results:

  • Participants responded faster when distractors flanked targets compared to when they intervened.

Related Experiment Videos

  • Response latencies showed a positive correlation with the number of intervening distractors.
  • Exclusion of lateral inhibition and response competition as explanations for findings.

    • Conclusions:

    • Evidence supports an object-based filtering cost in visual attention.
    • Findings have implications for understanding attentional selection across noncontiguous regions.