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Related Concept Videos

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Related Experiment Video

Updated: May 13, 2026

Eye Movements in Visual Duration Perception: Disentangling Stimulus from Time in Predecisional Processes
09:27

Eye Movements in Visual Duration Perception: Disentangling Stimulus from Time in Predecisional Processes

Published on: January 19, 2024

Rapid feature-driven changes in the attentional window.

Carly J Leonard1, Javier Lopez-Calderon, Johanna Kreither

  • 1University of California, Davis, Davis, CA, USA. cjleonard@ucdavis.edu

Journal of Cognitive Neuroscience
|March 2, 2013
PubMed
Summary
This summary is machine-generated.

The brain rapidly adjusts its spatial attention window around a target object based on its color and size. This adjustment influences how visual information flows through the brain, occurring within approximately 175 milliseconds.

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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception

Background:

  • Spatial attention dynamically adjusts to object size and proximity.
  • Nonspatial features often guide attentional processes.
  • Understanding the speed of attentional window adjustment is crucial for visual processing.

Purpose of the Study:

  • Investigate the speed of attentional window adjustment around a color-defined target.
  • Determine if attentional window size influences feedforward visual information flow.
  • Examine how quickly spatial attention adapts to task-relevant features.

Main Methods:

  • Used event-related potentials (ERPs) to measure sensory responses.
  • Employed a task requiring flexible attention to either a central or annular region based on color.
  • Presented an irrelevant probe stimulus at varying times to assess attentional modulation.

Main Results:

  • A larger sensory response to the probe occurred when it appeared within the attended region.
  • This attentional effect required a delay of approximately 175 milliseconds from task display onset.
  • Demonstrated rapid adjustment of the attentional window based on stimulus location.

Conclusions:

  • The attentional window rapidly adjusts around a fixated target based on its spatial extent.
  • Attentional window adjustments significantly impact the feedforward flow of visual information.
  • Color-defined spatial features guide rapid attentional recalibration.