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Shifting attention between objects.

C Iani1, R Nicoletti, S Rubichi

  • 1Dipartimento di Psicologia, Università di Bologna, Bologna, Italy.

Brain Research. Cognitive Brain Research
|March 10, 2001
PubMed
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Shifting attention between objects incurs an extra cost compared to shifting attention within a single object. This spatial attention research highlights object-based attentional effects.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Attention

Background:

  • Spatial cueing paradigms are crucial for understanding attentional mechanisms.
  • Previous research explored attentional shifts within and between locations.

Purpose of the Study:

  • To investigate the cognitive cost of shifting attention within an object versus between objects.
  • To differentiate object-based from location-based attentional effects.

Main Methods:

  • A modified spatial cueing paradigm (Egly et al., 1994) was employed.
  • Participants detected targets presented in cued, inside-invalid, and outside-invalid locations across two distinct rectangles.
  • Experiment 2 involved joining the rectangles to form a unitary object.

Related Experiment Videos

Main Results:

  • Valid trials were faster than invalid trials.
  • Inside-invalid trials were faster than outside-invalid trials when rectangles were separate.
  • No difference was observed between inside-invalid and outside-invalid trials when rectangles formed a unitary object.

Conclusions:

  • An additional processing cost is associated with shifting attention between distinct objects.
  • Attention is influenced by object boundaries, supporting object-based attention theories.