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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Topological change induces an interference effect in visual working memory.

Ning Wei1,2,3, Tiangang Zhou1,2,4,5, Yan Zhuo1,4,6

  • 1State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.

Journal of Vision
|September 2, 2021
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Summary
This summary is machine-generated.

Novel research reveals a topological-change interference effect (TCIE) impacting visual working memory (VWM). Task-irrelevant topological changes significantly disrupt VWM performance, unlike nontopological changes.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • The irrelevant-change distracting effect is a common paradigm for studying visual working memory (VWM).
  • Understanding how irrelevant visual information processing impacts VWM is crucial for cognitive science.

Purpose of the Study:

  • To investigate a novel interference effect in VWM, termed the topological-change interference effect (TCIE).
  • To differentiate the impact of topological versus nontopological irrelevant changes on VWM performance.

Main Methods:

  • A series of six experiments using a color change detection paradigm.
  • Manipulation of irrelevant topological and nontopological visual features during VWM tasks.
  • Assessment of VWM performance under varying experimental conditions.

Main Results:

  • Topological changes, even when task-irrelevant, significantly interfered with VWM performance.
  • Nontopological changes did not produce a noticeable interference effect in VWM.
  • The topological-change interference effect (TCIE) was robust across different locations, reporting methods, stimuli, feature dimensions, and delay intervals.

Conclusions:

  • Topological changes exert a significant, stable interference on visual working memory (VWM).
  • The findings support the role of topological invariance in maintaining object representations within VWM.
  • This suggests that the brain prioritizes processing of fundamental object properties in VWM.