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Related Experiment Video

Updated: May 15, 2026

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Numbers reorient visuo-spatial attention during cancellation tasks.

Samuel Di Luca1, Mauro Pesenti, Giuseppe Vallar

  • 1Centre de Neuroscience Système et Cognition, Institut de Recherche en Sciences Psychologiques, Institute of Neuroscience, Université Catholique de Louvain, Place Cardinal Mercier, 10, 1348, Louvain-la-Neuve, Belgium. samuel.diluca@uclouvain.be

Experimental Brain Research
|January 12, 2013
PubMed
Summary

Spatial attention shifts left for small numbers and right for large numbers. This number-space association extends beyond horizontal lines to complex visual scenes, influencing exploration patterns.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visuospatial Cognition

Background:

  • Numerical magnitude is known to influence spatial attention, typically along a horizontal axis.
  • Previous research has not fully clarified if this number-space association applies to broader visual exploration beyond linear arrangements.

Purpose of the Study:

  • To investigate the influence of numerical magnitude on spatial attention during free exploration of complex visual scenes.
  • To determine if the number-space association extends beyond horizontal dimensions to encompass vertical and unstructured visual fields.

Main Methods:

  • Utilized a cancellation paradigm involving participants freely scanning complex visual scenes.
  • Employed Arabic digits as targets and distracters across structured and unstructured visual displays with varying set sizes.

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Last Updated: May 15, 2026

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  • Adapted five cancellation tasks to assess attentional shifts during exploration.

    • Main Results:

    • Participant hit distributions shifted leftward for small numbers and rightward for large numbers.
    • This magnitude-dependent attentional shift was maximized when numerical cues were sparse, randomly arranged, and task-irrelevant.
    • Evidence suggests the number-space association is not limited to horizontal space.

    Conclusions:

    • Numerical magnitude significantly influences spatial attention during complex visual scene exploration.
    • The findings extend the understanding of the number-space association to non-linear and broader visual fields.
    • This research provides novel evidence for magnitude-driven attentional shifts in visuospatial exploration tasks.