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How the brain prevents a second error in a perceptual decision-making task.

Rinaldo Livio Perri1,2, Marika Berchicci1, Giuliana Lucci2,3

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Following errors, brain activity shows adjustments for better performance. This study reveals specific neural changes, like enhanced prefrontal negativity and reduced Bereitschaftspotential, aiding error prevention.

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Area of Science:

  • Cognitive Neuroscience
  • Electrophysiology

Background:

  • Cognitive tasks often involve errors, leading to post-error slowing (PES) and post-error improvement (PIA).
  • Theoretical accounts include cognitive, inhibitory, and orienting explanations for these adjustments.

Purpose of the Study:

  • Investigate neural processes underlying error prevention after commission.
  • Examine preparatory brain activity following errors in a Go/No-go task.

Main Methods:

  • Event-related potential (ERP) study.
  • Large sample of subjects performing a Go/No-go task.
  • Focused on preparatory brain activity in post-error trials.

Main Results:

  • Enhanced prefrontal negativity (pN), particularly on the right hemisphere.
  • Reduced Bereitschaftspotential (BP), especially on the left hemisphere, in post-error trials.
  • ERP data indicated increased top-down and inhibitory control, with reduced premotor area excitability.

Conclusions:

  • Neural adjustments support second error prevention.
  • Findings suggest increased top-down control and reduced motor preparation after errors.
  • Post-error adjustment components (pN, BP) are distinct from error-related potentials (Ne, Pe).