Can a scalp cap read the brain as well as implanted wires?

NCT ID NCT03629743

Completed Knowledge-focused Sponsor: Stanford University Source: ClinicalTrials.gov ↗

First seen Aug 11, 2026 · Last updated Aug 12, 2026 · Updated 1 time

Summary

This study explores how well non-invasive scalp electrodes (EEG) match up with brain signals recorded directly from implanted electrodes (ECOG) in people undergoing anesthesia. Researchers will track brain activity and consciousness levels before, during, and after anesthesia in about 20 adults with epilepsy who already need implanted electrodes for medical reasons. The goal is to better understand how surface EEG reflects deep brain activity, which could improve anesthesia monitoring in the future.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Surface EEG and implanted ECOG recordings
What this could lead to: If successful, this could improve how doctors monitor consciousness during anesthesia, potentially leading to safer anesthesia care.
What could go wrong: This is a small, early-stage observational study with only 20 participants, so findings may not apply broadly. It does not test a treatment, so it won't directly change patient care.

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Conditions

The condition(s) this trial relates to.

epilepsy

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ANESTHESIA

Contacts and locations

Locations

Stanford University

Stanford, California, 94305, United States

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