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Objects and their locations in exogenous cuing.

K L Schendel1, L C Robertson, A Treisman

  • 1University of California, Davis, California, USA. kristals@ebire.org

Perception & Psychophysics
|July 5, 2001
PubMed
Summary
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Objects influence reflexive visual attention, especially at longer intervals. This study found object cuing aids targets on cued locations, unlike location cuing which shows inhibition of return at longer stimulus onset asynchronies (SOAs).

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Visual attention comprises distinct object- and location-based mechanisms.
  • Previous research primarily linked object-based attention to voluntary control.
  • Emerging evidence suggests objects influence reflexive orienting, particularly at longer stimulus onset asynchronies (SOAs).

Purpose of the Study:

  • To investigate the role of objects in reflexive attentional orienting.
  • To differentiate object-based and location-based cuing effects across short and long SOAs.
  • To explore the interaction between objects and locations in exogenous orienting.

Main Methods:

  • Developed a novel task to separately assess location and object cuing.
  • Examined attentional effects at both short and long stimulus onset asynchronies (SOAs).

Related Experiment Videos

  • Measured reaction times to targets presented in cued and uncued locations/objects.

    • Main Results:

    • Standard location cuing effects observed: facilitation at short SOAs and inhibition of return (IOR) at long SOAs.
    • Object cuing produced facilitation for cued objects at long SOAs, with no object-based IOR.
    • Object cuing predominantly influenced targets in cued locations, not uncued ones.

    Conclusions:

    • Reflexive orienting involves both location and object-based processes.
    • Object-based orienting at long SOAs appears mediated by location.
    • Findings support a location-mediated framework for object-based attentional effects in exogenous orienting.