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Transauricular Vagus Nerve Stimulation and Electroencephalographic Assessment in Disorders of Consciousness
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Reduced distractor interference during vagus nerve stimulation.

Marlies E van Bochove1, Leen De Taeye2, Robrecht Raedt2

  • 1Department of Experimental Psychology, Ghent University, Belgium; Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands.

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
|March 26, 2018
PubMed
Summary
This summary is machine-generated.

Vagus nerve stimulation (VNS) in epilepsy patients improved the ability to suppress irrelevant information, particularly in responders. This suggests norepinephrine (NE) plays a key role in cognitive control enhancement.

Keywords:
Cognitive controlCongruency effectEpilepsyNorepinephrine (NE)Vagus nerve stimulation (VNS)

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Background:

  • Suppressing irrelevant information is crucial for effective decision-making.
  • Vagus nerve stimulation (VNS) is an epilepsy treatment known to increase brain norepinephrine (NE).
  • Norepinephrine is implicated in enhancing cognitive control functions.

Purpose of the Study:

  • To investigate if VNS can improve the ability to suppress irrelevant information in epilepsy patients.
  • To explore the role of norepinephrine in VNS-induced cognitive improvements.

Main Methods:

  • Nineteen epilepsy patients undergoing VNS completed the Eriksen flanker task during both VNS-on and VNS-off conditions.
  • The congruency effect, a measure of distractor interference, was used to assess cognitive control.
  • Patient response to VNS therapy was clinically assessed.

Main Results:

  • A significant reduction in the congruency effect was observed during VNS-on compared to VNS-off conditions.
  • This improvement in suppressing distractor interference was specifically noted in patients who were clinical VNS-responders.
  • No significant effect was observed in non-responders.

Conclusions:

  • Vagus nerve stimulation enhances cognitive control by improving the suppression of irrelevant information in epilepsy patients.
  • The findings support a role for norepinephrine in mediating VNS-induced cognitive benefits.
  • VNS may offer advantages beyond seizure reduction, including cognitive enhancement in responsive individuals.