Overnight TI in TLE

Summary

The goal of this clinical trial is to gauge whether overnight, non-invasive temporal interference (TI) stimulation aimed at the hippocampus can reduce abnormal brain activity linked to seizures and improve sleep in adults with drug-resistant temporal lobe epilepsy. The main questions are:

Does overnight TI stimulation lower seizure-related EEG activity during sleep?

Does overnight TI stimulation improve sleep quality and sleep patterns measured overnight in the lab?

Researchers will compare each participant's nights without stimulation to nights with active stimulation, and will also look at a night after stimulation ends to see whether any changes last.

Participants will:

Stay in-lab for six days for overnight sleep and EEG monitoring

Have one night of monitoring without stimulation

Receive TI stimulation during sleep for several nights

Have another night of monitoring without stimulation after the stimulation nights

Complete brief questionnaires and thinking/memory tasks before and after the stimulation nights

Be checked for side effects and comfort during the study and at follow-up

Conditions

• Temporal Lobe Epilepsy (TLE)
• Drug Resistant Epilepsy
• Sleep

Interventions

DEVICE

Non-invasive Temporal Interference (TI) Stimulation Targeting Bilateral Hippocampi

Non-invasive temporal interference (TI) electrical stimulation delivered overnight to target the bilateral hippocampi during in-laboratory polysomnography and scalp EEG monitoring. Stimulation is applied via a multi-channel, current-controlled stimulator using a scalp electrode montage planned with MRI-guided modeling. TI is delivered continuously from lights-off to lights-on for three consecutive nights, with gradual ramp-up and ramp-down at the start and end of each session. Stimulation parameters use kilohertz carrier currents arranged to produce an amplitude-modulated envelope at 130 Hz at each hippocampal target, with current adjusted within preset safety limits based on tolerability and impedance.

Sponsors & Collaborators

• St. Anne's University Hospital Brno, Czech Republic

  collaborator OTHER

• Duke University

  lead OTHER

Principal Investigators

• Birgit Frauscher, MD / PD · Duke University

• Adam Williamson, PhD · St. Anne's University Hospital, Brno Czechia

Study Design

Allocation

NA

Purpose

TREATMENT

Masking

NONE

Model

SINGLE_GROUP

Eligibility

Min Age

18 Years

Max Age

70 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2026-06-01

Primary Completion

2026-10-30

Completion

2026-10-30

FDA Device

Yes

Countries

• United States

Study Locations