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Related Concept Videos

Working Memory01:24

Working Memory

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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...
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Related Experiment Video

Updated: Dec 25, 2025

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Data from brain activity during visual working memory replicates the correlation between contralateral delay activity

Mario Villena-González1,2, Iván Rubio-Venegas1, Vladimir López1

  • 1Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago, CP: 7820436, Chile.

Data in Brief
|April 1, 2020
PubMed
Summary

This study analyzed event-related brain potentials (ERPs) and behavior in a working memory task. Results show a correlation between working memory capacity and contralateral delay activity, replicating prior findings.

Keywords:
Change detection taskContralateral delay activityEvent related potentialMemory capacityMemory loadWorking memory

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Area of Science:

  • Cognitive Neuroscience
  • Psychology

Background:

  • Working memory capacity (WMC) is crucial for cognitive function.
  • Event-related brain potentials (ERPs), specifically contralateral delay activity (CDA), offer insights into neural mechanisms of working memory.

Purpose of the Study:

  • To investigate the relationship between WMC and CDA amplitude.
  • To replicate findings from Vogel 2004 in a modified change detection task.

Main Methods:

  • Utilized a change detection task with varying memory loads (1, 2, 4 items).
  • Calculated CDA from posterior parieto-occipital electrodes.
  • Assessed WMC using Pashler's (1988) formula from behavioral data.

Main Results:

  • A significant correlation was found between WMC and the CDA amplitude difference between the 2- and 4-item conditions.
  • This correlation replicated the findings of Vogel 2004.

Conclusions:

  • CDA is a reliable neural marker for working memory capacity.
  • The relationship between CDA and WMC is robust, even with modifications to task parameters.