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Related Experiment Videos

Frames of reference in unilateral neglect and visual perception: a computational perspective.

Michael C Mozer1

  • 1Department of Computer Science, University of Colorado at Boulder, 80309-0430, USA. mozer@cs.colorado.edu

Psychological Review
|February 28, 2002
PubMed
Summary

Neurological patients with unilateral neglect may not require object-based frames for attention. A connectionist model demonstrates how viewer-based attention can explain object-based effects in spatial neglect research.

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Area of Science:

  • Cognitive Neuroscience
  • Computational Neuroscience
  • Neurology

Background:

  • Unilateral neglect affects neurological patients' ability to orient to stimuli on one side.
  • A central debate concerns whether neglect is viewer-based or object-based.

Purpose of the Study:

  • To investigate if object-based frames of reference are necessary to explain attentional deficits in unilateral neglect.
  • To test whether viewer-based models can account for object-based attentional effects.

Main Methods:

  • Simulations using a view-based connectionist model of spatial attention.
  • Analyzing model outputs to determine the frame of reference for attentional allocation.

Main Results:

  • Object-based attentional effects were successfully simulated without invoking object-based frames of reference.

Related Experiment Videos

  • The model demonstrated that viewer-based attention can produce phenomena previously attributed to object-based frames.

    • Conclusions:

    • The inference that attention operates in an object-based frame is not logically necessary.
    • View-based theories of object recognition can accommodate previously problematic phenomena in spatial attention research.