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Object-based attention and object working memory: overlapping processes revealed by selective interference effects in

L L Barnes1, J K Nelson, P A Reuter-Lorenz

  • 1Department of Psychology, University of Michigan, Ann Arbor, MI 48109-1109, USA.

Progress in Brain Research
|November 13, 2001
PubMed
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Human attention is object-based, not just location-based. Performing an object working memory task selectively interferes with this object-based attention, supporting domain-specific cognitive systems.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Human observers show a 'single object advantage,' processing attributes of one object more efficiently than those of multiple objects.
  • This advantage challenges purely spatial models of attention, suggesting object-based attentional selection.
  • Prior research implicates inferior temporal and parietal regions in object-based attention and memory.

Purpose of the Study:

  • To investigate the nature of object-based attention and its relationship with working memory.
  • To determine if concurrent working memory tasks selectively interfere with object-based attentional processes.
  • To explore the domain-specificity of attentional and memory systems.

Main Methods:

  • Participants performed visual discrimination tasks involving single versus multiple objects.

Related Experiment Videos

  • Concurrent tasks included object, verbal, and spatial working memory.
  • Performance was measured by comparing discrimination efficiency across conditions.

    • Main Results:

    • The single object advantage was significantly reduced by concurrent object working memory tasks.
    • Concurrent verbal and spatial working memory tasks did not affect the single object advantage.
    • This selective interference supports the role of object-based attention in working memory.

    Conclusions:

    • Object-based attentional processes are distinct from spatial attention and contribute to object working memory.
    • Cognitive systems for attention and memory appear to be organized along domain-specific lines.
    • Attention plays a crucial role in memory rehearsal operations, particularly for object representations.