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Related Experiment Videos

Is the 'error negativity' specific to errors?

F Vidal1, T Hasbroucq, J Grapperon

  • 1Institut de Médecine Navale du Service de Santé des Armées, BP 610, 83880, Toulon Naval, France. vidal@lnf.cnrs-mrs.fr

Biological Psychology
|February 25, 2000
PubMed
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A small error-related negativity (ERN) wave was detected in correct response trials during reaction time tasks. This finding suggests the ERN may reflect comparison or emotional processes, not solely error detection.

Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • The error-related negativity (ERN) is an electroencephalography (EEG) signal typically observed after erroneous responses.
  • It is often considered absent during correct response trials in reaction time tasks.

Purpose of the Study:

  • To investigate the presence and characteristics of the ERN during correct response trials.
  • To explore the underlying mechanisms of the ERN, potentially beyond simple error detection.

Main Methods:

  • Utilized a choice reaction time task and a simple reaction time task.
  • Employed surface Laplacians estimated by the source derivation method to analyze EEG data.
  • Focused on the electroencephalography (EEG) signal at the FCz electrode.

Main Results:

Related Experiment Videos

  • A small but distinct ERN wave was identified on correct response trials in both reaction time tasks.
  • The ERN wave at FCz exhibited a similar time course across correct, sub-threshold EMG activation, and error trials.
  • Current source density maps confirmed a focus of activity at FCz.

Conclusions:

  • The ERN may not exclusively signal error detection but could also reflect underlying comparison or emotional processes.
  • The findings challenge the traditional view of the ERN as solely an error monitoring signal.