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Related Experiment Videos

Attentional capture by globally defined objects.

R Rauschenberger1, S Yantis

  • 1Johns Hopkins University, Baltimore, Maryland 21218, USA. rauschen@u.arizona.edu

Perception & Psychophysics
|January 5, 2002
PubMed
Summary
This summary is machine-generated.

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Global objects capture attention more readily than local ones in hierarchical visual scenes. This suggests an asymmetry in how attention is drawn to different levels of visual information, impacting search performance.

Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Neuroscience

Background:

  • Visual attention is typically captured by abrupt onsets.
  • Attention deployment can be influenced by pre-existing attentional focus.
  • Hierarchical scenes present information at both global and local levels.

Purpose of the Study:

  • To investigate if global objects in a hierarchical scene capture attention.
  • To determine if global object appearance affects attention to local elements.
  • To explore asymmetries in attentional capture between global and local visual information.

Main Methods:

  • Participants searched for a target in an array of 'pacmen'.
  • A subset of 'pacmen' formed a subjective square (global object).

Related Experiment Videos

  • Response times to local targets were measured under different conditions.

    • Main Results:

    • Participants were slower to detect local targets when a new global object (subjective square) appeared.
    • This slowing effect was absent with outline 'pacmen' or when the global object was perceptually old.
    • A new local element captured attention when the task focused on the local level.

    Conclusions:

    • Global objects, particularly novel ones, capture visual attention.
    • There is an asymmetry in attentional capture, with global elements dominating over local ones.
    • Global objects capture attention due to their potentially higher ecological relevance.