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Visual working memory (VWM) influences perception spatially when locations match, but globally when location is irrelevant. Task demands flexibly shape this interaction, showing VWM

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Working Memory

Background:

  • Visual working memory (VWM) and visual processing may share neural resources.
  • The spatial specificity of VWM's influence on perception is not well understood.

Purpose of the Study:

  • To investigate whether VWM influences visual perception in a spatially specific or global manner.
  • To determine how task demands affect the spatial specificity of the VWM-perception interaction.

Main Methods:

  • Participants performed orientation or contrast discrimination tasks while holding an orientation in VWM.
  • Experiments manipulated the spatial relationship between memory and perception stimuli.
  • Task demands regarding location encoding were varied across experiments.

Main Results:

  • VWM boosted perceived contrast when memory and perception stimuli shared orientation and location.
  • This location-specific benefit diminished when locations mismatched.
  • Task demands influenced spatial specificity: global effects emerged when location encoding was discouraged.

Conclusions:

  • The spatial specificity of VWM-perception interaction is modulated by context-binding demands.
  • Working memory representations are flexibly configurable based on task relevance.
  • Findings illuminate the interplay between memory maintenance and ongoing perceptual processing.