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Conducting Concurrent Electroencephalography and Functional Near-Infrared Spectroscopy Recordings with a Flanker Task
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The Effect of a Verbal Concurrent Task on Visual Precision in Working Memory.

Ed D J Berry1, Richard J Allen1, Amanda H Waterman1

  • 11 School of Psychology, University of Leeds, UK.

Experimental Psychology
|February 20, 2019
PubMed
Summary

Investigating verbal load on visual memory suggests working memory may involve separate components. This study quantifies visual representation precision under verbal interference.

Keywords:
cognitive loaddual taskshort-term memoryvisual memoryworking memory

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Memory Research

Background:

  • Working memory (WM) is crucial for cognition, but its underlying architecture remains debated.
  • Theories propose either modality-specific stores or a general attentional resource for WM.
  • Quantifying the precision of visual representations is key to testing these theories.

Purpose of the Study:

  • To investigate the impact of verbal load on visual working memory precision.
  • To determine if working memory is better explained by modality-specific stores or a general attentional resource.
  • To quantify the precision of visual representations in working memory.

Main Methods:

  • A visual working memory task was employed to measure representation precision.
  • Individualized verbal load was manipulated to assess interference effects.
  • Bayesian analyses were used to evaluate evidence for different theoretical accounts.

Main Results:

  • Verbal load had a small effect on visual precision and binary feature recall.
  • Results were indeterminate regarding the dual-task effect on verbal accuracy and continuous feature recall.
  • Evidence partially supports a multiple component model of working memory.

Conclusions:

  • Findings suggest that working memory may comprise distinct components, challenging a single general resource model.
  • The study highlights the importance of precise predictions and effect size analysis in memory research.
  • Further research is needed to fully elucidate the architecture of working memory.