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Foreground bias: Semantic consistency effects modulated when searching across depth.

Karolina J Krzyś1, Louisa L Y Man2, Jeffrey D Wammes2

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Visual search prioritizes foreground information. Semantic consistency effects are smaller in the foreground, suggesting foreground bias modulates how we process context, making performance less impacted in near space.

Keywords:
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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Neuroscience

Background:

  • Humans often prioritize foreground over background information during visual scene processing.
  • Foreground bias is evidenced by increased attention and faster target detection in foreground regions.
  • Semantic consistency generally improves search efficiency, but its interaction with foreground bias is not fully understood.

Purpose of the Study:

  • To investigate how semantic context interacts with foreground prioritization in visual search.
  • To determine if semantic consistency amplifies or mitigates the foreground bias.
  • To explore the modulation of semantic effects by depth and spatial attention.

Main Methods:

  • Participants viewed visual scenes with targets placed in foreground or background regions.
  • Targets varied in semantic consistency with the surrounding depth region.
  • Response times and accuracy were measured to assess search efficiency across conditions.

Main Results:

  • Faster response times were observed for both foreground and semantically consistent targets.
  • The effect of semantic consistency on performance was significantly smaller in the foreground compared to the background.
  • This pattern replicated in a second experiment with increased semantic reliability.

Conclusions:

  • Foreground bias modulates the impact of semantic consistency during visual search.
  • Performance is less affected by semantic incongruity in near (foreground) space.
  • This suggests a spatial modulation of semantic processing, prioritizing immediate surroundings.