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Attentional resources modulate error processing-related brain electrical activity: Evidence from a dual-task design.

Mingxiu Han1, Li Shi1, Shiwei Jia1

  • 1School of Psychology, Shandong Normal University, Jinan, China.

Brain Research
|June 6, 2017
PubMed
Summary

Reduced attentional resources decreased error positivity (Pe) amplitude, particularly in its late stage. Error negativity (Ne) amplitude remained unaffected, suggesting attention impacts later error processing more significantly.

Keywords:
Attentional resourcesDual-task designError negativity (Ne)Error positivity (Pe)Error processing

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Area of Science:

  • Cognitive Neuroscience
  • Psychology

Background:

  • Attention is crucial for error processing, yet its precise role remains under-investigated.
  • Error-related brain potentials, including error negativity (Ne) and error positivity (Pe), offer insights into error monitoring.

Purpose of the Study:

  • To investigate how varying attentional resource levels influence the error negativity (Ne) and error positivity (Pe) components.
  • To determine if attentional load differentially affects early (Ne) versus late (Pe) stages of error processing.

Main Methods:

  • A dual-task paradigm was employed, integrating the flanker task with a working memory load task.
  • Electroencephalography (EEG) was used to measure event-related potentials (ERPs) associated with errors.

Main Results:

  • A significant reduction in error positivity (Pe) amplitude was observed under decreased attentional resources, especially in the late Pe stage.
  • Error negativity (Ne) amplitude did not show significant modulation by changes in attentional resources.

Conclusions:

  • The early phase of error processing (Ne) appears less sensitive to attentional resource availability.
  • The later phase of error processing (Pe) is modulated by attentional resources, with the late Pe stage being particularly affected.