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iTBS Methods and Motor Cortex Excitability

NCT03584438 · Status: COMPLETED · Phase: EARLY_PHASE1 · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2020-03-12

No results posted yet for this study

Summary

In a recent publication by Gamboa et al. 20108 it was shown that extended theta-burst stimulation duration might have reverse effects on cortical excitability when compared to the original Huang et al. 2005 publication. While the post treatment effects of the original Huang et al. 2005 protocol were successfully replicated, when continuous theta burst stimulation (cTBS) protocols were doubled to 1200 pulses over 80 seconds and the iTBS protocols were doubled to 1200 pulses over 390 seconds, there was increased facilitation after the prolonged cTBS and decreased excitability after prolonged iTBS. Currently there is an interest in optimizing repetitive transcranial magnetic stimulation (rTMS) protocols and in particular theta burst stimulation as both a therapeutic and an investigational tool. In Hanlon et al. 2015, a novel theta burst paradigm is described in which two trains of 1800 pulses of cTBS were administered, each train separated by a one-minute interval. In this study 11-cocaine dependent individuals underwent cTBS over the medial prefrontal cortex (MPFC) and showed attenuated craving as well as decreases in activity of the striatum and anterior insula. This study aims to replicate the findings of the Gamboa and Huang protocols as well as investigate how novel theta burst stimulation paradigms such as those described in Hanlon et al. 2015, which are currently being explored as therapeutic methods in addiction may change cortical excitability.

Conditions

  • Motor Activity

Interventions

DEVICE

Real iTBS

This will be delivered with the Magventure Magpro system; pulses are delivered with the active coil (double blinded using the Universal Serial Bus key)

DEVICE

Sham iTBS

This will be delivered with the Magventure Magpro system; pulses are delivered with the sham coil (double blinded using the Universal Serial Bus key). The MagVenture MagPro system has an integrated active sham that passes current through two surface electrodes placed on the skin beneath the B60 coil.

Sponsors & Collaborators

  • MUSC Center for Biomedical Research Excellence in Stroke Recovery

    collaborator UNKNOWN

  • Medical University of South Carolina

    lead OTHER

Principal Investigators

  • Lisa McTeague, PhD · Medical University of South Carolina

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2018-05-26
Primary Completion
2020-02-07
Completion
2020-02-07
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 NCT03584438 on ClinicalTrials.gov