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Related Experiment Videos

Visual attention mechanisms show a center-surround organization

B A Steinman1, S B Steinman, S Lehmkuhle

  • 1School of Optometry, University of Missouri, St Louis 63121-4499, USA.

Vision Research
|July 1, 1995
PubMed
Summary

Visual attention enhances processing near a cue, creating motion illusions. This attentional perceptive field has an excitatory center and inhibitory surround, explaining attention benefits and costs.

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Vision and attention. I: Current models of visual attention.

Optometry and vision science : official publication of the American Academy of Optometry·1998

Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Psychophysics

Background:

  • Visual attention modulates sensory processing.
  • Attentional benefits and costs are well-documented phenomena.

Purpose of the Study:

  • To investigate the spatial characteristics of visual attention.
  • To elucidate the mechanisms underlying attentional benefits and costs.

Main Methods:

  • Utilizing a motion illusion paradigm triggered by peripheral cues.
  • Measuring illusory motion strength and direction at varying cue-stimulus separations.

Main Results:

  • Cue onset enhanced visual processing near the cue, inducing illusory motion.
  • Illusory motion reversed direction at greater separations, suggesting prolonged processing.

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  • Data revealed an attentional perceptive field with an excitatory center and inhibitory surround.

    • Conclusions:

    • The attentional perceptive field model explains attentional benefits and costs.
    • Visual attention operates with both facilitatory and inhibitory spatial zones.