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Hippocampal Network Function in Epilepsy

NCT06521437 · Status: ENROLLING_BY_INVITATION · Phase: NA · Type: INTERVENTIONAL · Enrollment: 34

Last updated 2025-09-12

No results posted yet for this study

Summary

The aim of this pilot study is to understand hippocampal network function in mesial temporal lobe epilepsy (MTLE) and to test whether transcranial magnetic stimulation (TMS) targeting the network of the hippocampus can change hippocampal-dependent memory task performance and epileptic activity in people with (MTLE). Positive findings would implicate the hippocampal network as a source of these typical primary MTLE symptoms.

Subjects with a primary diagnosis of MTLE will be enrolled in a non-randomized, non-blinded pilot experiment to test target engagement and preliminary efficacy of a novel neurostimulation approach targeting the hippocampal network. At baseline, subjects will undergo neurocognitive testing for hippocampal-dependent memory and functional magnetic resonance imagining (fMRI) neuroimaging assessment of brain structure and task-dependent activity. They will also receive scalp-electroencephalography (EEG) to measure interictal epileptiform discharge (IED) frequency at baseline, and will complete a seizure diary for one month. They will then receive high-frequency repetitive TMS targeting an area of parieto-occipital cortex defined based on fMRI connectivity with the hippocampus measured at baseline. The baseline assessments will then be repeated, using an alternate form of the memory test. The investigators will analyze changes from baseline in memory task performance, fMRI activity of the hippocampal network, IED frequency, and reported seizure frequency.

Conditions

  • Mesial Temporal Lobe Epilepsy

Interventions

DEVICE

TMS targeting the hippocampus indirectly via its network

Subjects will receive high-frequency repetitive TMS to a parieto-occipital location defined in each subject based on high resting-state fMRI connectivity with the hippocampus at baseline

Sponsors & Collaborators

  • University of Chicago

    lead OTHER

Principal Investigators

  • Joel Voss, PhD · University of Chicago

Study Design

Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-07-01
Primary Completion
2028-12-31
Completion
2028-12-31
FDA Device
Yes

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06521437 on ClinicalTrials.gov