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Related Concept Videos

Working Memory01:24

Working Memory

Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this information.

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Related Experiment Video

Updated: Jun 20, 2026

Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment
07:01

Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment

Published on: September 20, 2020

Selective removal of visual working memory items at test.

Chong Zhao1,2, Temilade Adekoya1,2, Sintra Horwitz1,2

  • 1Department of Psychology, University of Chicago, 5848 S University Ave, Chicago, IL 60637, United States.

Cerebral Cortex (New York, N.Y. : 1991)
|June 19, 2026
PubMed
Summary
This summary is machine-generated.

People selectively remove irrelevant information from working memory (WM) based on category, not location. This selective removal enhances memory-based decision-making efficiency.

Keywords:
CDAEEGERPremovalworking memory

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Last Updated: Jun 20, 2026

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Area of Science:

  • Cognitive Neuroscience
  • Psychology

Background:

  • Working memory (WM) involves retaining and manipulating information.
  • Understanding how irrelevant information is removed from WM at test is crucial for cognitive efficiency.

Purpose of the Study:

  • To investigate the mechanisms of selective information removal from WM.
  • To determine if spatial location or categorical relevance guides information removal.

Main Methods:

  • Utilized contralateral delay activity (CDA) to measure WM load.
  • Conducted three experiments manipulating item presentation and probing.
  • Analyzed P3 old-new effects to assess decision speed and strength.

Main Results:

  • CDA amplitudes increased with set size, indicating minimal removal by spatial location.
  • Sequential presentation in the same location did not improve retention efficiency.
  • CDA amplitudes decreased when items were categorized, suggesting category-based removal.

Conclusions:

  • WM contents are selectively removed based on categorical relevance, not spatial cues.
  • Category-based removal facilitates more efficient memory-based decisions.