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Related Experiment Videos

Objects are highlighted by spatial attention.

A Martínez1, W Teder-Sälejärvi, M Vazquez

  • 1Dept. of Neurosciences, University of California-San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.

Journal of Cognitive Neuroscience
|February 24, 2006
PubMed
Summary
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Object-selective attention enhances neural processing within an object, sharing mechanisms with spatial attention. This study used event-related brain potentials (ERPs) and functional magnetic brain imaging (fMRI) to investigate visual attention.

Area of Science:

  • Cognitive Neuroscience
  • Visual Perception

Background:

  • Selective attention enhances perception in attended regions.
  • The role of spatial attention in object selection remains debated.

Purpose of the Study:

  • Investigate the relationship between spatial and object-selective attention.
  • Determine if object-selective attention utilizes shared neural mechanisms with spatial attention.

Main Methods:

  • Event-related brain potentials (ERPs) and functional magnetic brain imaging (fMRI) were recorded.
  • Subjects directed attention to stimuli on one bar-shaped object.

Main Results:

  • Neural activity for attended and unattended stimuli on the same object showed similar patterns.
  • Enhanced neural activity was localized to the lateral occipital extrastriate cortex.

Related Experiment Videos

  • Object-selective attention modulated neural processing within object boundaries.

    • Conclusions:

    • Object-selective attention shares neural mechanisms with spatial attention.
    • Sensory processing is facilitated for stimuli within attended object boundaries.