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Neocortical electrical stimulation for epilepsy: Closed-loop versus open-loop.

Albena Vassileva1, Dorien van Blooijs2, Frans Leijten2

  • 1Department of Neurology and Neurosurgery, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, Netherlands; Institute for Neuroscience and Medicine (INM-3, INM-7), Research Center Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany(2); Institute for Systems Neuroscience, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany.

Epilepsy Research
|March 17, 2018
PubMed
Summary
This summary is machine-generated.

Open-loop neocortical electrical stimulation showed over 90% seizure reduction, while closed-loop stimulation achieved 60-65% reduction. Both methods are effective for intractable epilepsy, but further comparison is needed.

Keywords:
Brain stimulationClosed-loopCortical electrical stimulationEpilepsyOpen-loop

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Area of Science:

  • Neurology
  • Neurosurgery
  • Biomedical Engineering

Background:

  • Intractable epilepsy management often requires advanced interventions.
  • Neocortical electrical stimulation is a promising therapeutic avenue.
  • Evaluating open-loop versus closed-loop systems is crucial for optimizing treatment.

Purpose of the Study:

  • To compare the efficacy of open-loop and closed-loop neocortical electrical stimulation for intractable epilepsy.
  • To determine the preferred approach for seizure management.

Main Methods:

  • Review of case studies for open-loop neocortical stimulation (20 patients).
  • Analysis of clinical trial data for closed-loop stimulation (RNS System, 115 patients at follow-up).
  • Comparative analysis of seizure frequency reduction reported for both methods.

Main Results:

  • Open-loop stimulation demonstrated an average seizure frequency reduction exceeding 90%.
  • Closed-loop stimulation achieved a seizure frequency reduction of 60-65%.
  • Both stimulation approaches proved effective in reducing seizures.

Conclusions:

  • Both open-loop and closed-loop neocortical electrical stimulation are effective for intractable epilepsy.
  • The optimal clinical approach remains undetermined due to differing patient numbers in reported studies.
  • A head-to-head adaptive clinical study is proposed to directly compare the two methods.