CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 27 enrolled
Drug / intervention
Functional Magnetic Resonance Imaging (fMRI) +1 moreother
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04402294
NCT04402294N/ACompleted

Individualized Closed Loop Transcranial Magnetic Stimulation (TMS) for Working Memory Enhancement

University of Pennsylvania·interventional·Posted May 26, 2020·Updated Jul 17, 2025

In Brief

A clinical study evaluating Functional Magnetic Resonance Imaging (fMRI) and Repetitive Transcranial Magnetic Stimulation (rTMS) for Memory. Completed, enrolled 27 participants across 1 site.

Detailed Summary

The study is investigating working memory brain states by using transcranial magnetic stimulation (TMS) in combination with functional magnetic resonance imaging (fMRI). The study uses a novel, individualized targeting approach for TMS based on each subject's individual multi-modal fMRI data. The individualized target will be stimulated in a TMS/ fMRI imaging session to investigate working memory states and optimal stimulation frequencies.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsMemory
CountriesUnited States

Timeline

N/ACompletedFinished
202120222023202420252026
First PostedMay 26, 2020
Enrollment StartNov 24, 2021
Primary CompletionJun 13, 2024
TodayJul 2, 2026
Enrollment to primary: 2.6 yearsPosted 6.1 years ago

Interventions

Functional Magnetic Resonance Imaging (fMRI)other

Participants undergo resting-state and task-based fMRI to identify individualized transcranial magnetic stimulation (TMS) targets and determine optimal and sub-optimal stimulation frequencies. Additional fMRI scans are performed after each neuromodulation phase to assess changes following three days of stimulation at the optimal and sub-optimal frequencies.

Repetitive Transcranial Magnetic Stimulation (rTMS)device

Participants first receive multiple rTMS frequencies during an fMRI scan to assess brain responses and determine individualized optimal and sub-optimal stimulation frequencies. They then complete two neuromodulation intervention periods, receiving rTMS at the identified optimal and sub-optimal frequencies. Each frequency is administered over three consecutive days, with the order of conditions randomized and counterbalanced.