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Related Experiment Video

Updated: May 1, 2026

How to Find Effects of Stimulus Processing on Event Related Brain Potentials of Close Others when Hyperscanning Partners
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A frontal cortex event-related potential driven by the basal forebrain.

David P Nguyen1, Shih-Chieh Lin

  • 1Neural Circuits and Cognition Unit, Laboratory of Behavioral Neuroscience, National Institute on Aging, National Institutes of Health, Baltimore, United States.

Elife
|April 10, 2014
PubMed
Summary

Cognitive event-related potentials (ERPs) are influenced by subcortical brain regions. This study reveals basal forebrain activity drives frontal ERPs, challenging previous assumptions about cortical generation.

Keywords:
attentionbasal forebrainevent-related potentialfrontal cortexmotivational salience

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Electrophysiology

Background:

  • Event-related potentials (ERPs) are crucial physiological markers for cognitive functions in various conditions.
  • Current understanding often attributes cognitive ERP generation solely to local cortical activity.

Purpose of the Study:

  • To investigate the subcortical contribution to cognitive ERPs, specifically attention-related frontal ERPs.
  • To challenge the prevailing view of localized cortical generation of cognitive ERPs.

Main Methods:

  • Electrophysiological recordings in rats performing an auditory oddball task.
  • Analysis of single-trial correlations between frontal ERPs and basal forebrain (BF) neuronal activity.
  • Investigation of local field potentials (LFPs) in deep cortical layers and response to BF electrical stimulation.

Main Results:

  • Frontal ERP amplitude and timing were significantly coupled with basal forebrain neuronal activity on a single-trial basis.
  • Cortical LFPs associated with the frontal ERP showed coupling with BF activity and were triggered by BF stimulation.
  • BF inputs were identified in deep cortical layers, correlating with ERP generation zones.

Conclusions:

  • Long-range subcortical inputs from the basal forebrain play a critical, previously unrecognized role in generating cognitive ERPs.
  • This finding necessitates a revision of models explaining the neural basis of cognitive ERPs.