Non-Invasive Stimulation for Improving Motor Function

Status Recruiting

Clinical Trial Summary

The purpose of this study is to determine if spinal excitability is increased with a Spinal Associative Stimulation (SAS) protocol, and to determine the functional consequences of this technique on motor recovery.

Clinical Trial Description

Recovery of motor function continues to be a problem following Spinal Cord Injury. Non-invasive brain stimulation techniques, targeting cortical areas, have been shown to enhance the excitability in the human motor cortex, and these changes in the motor cortex may be of significance for the rehabilitation of brain injured patients. However, little is known about the adaptational changes in the excitability/plasticity of spinal neural circuits in spinal cord injury patients.

The purpose of this study is to investigate the excitability of cortical and spinal inhibitory and excitatory mechanisms before and following a period of repetitive and synchronized dual peripheral nerve and brain stimulation. Repetitive, paired brain and peripheral nerve stimulation as a neuromodulatory tool, paired associative stimulation (PAS), has been well described. In this technique, stimuli are timed such that afferent and efferent volleys interact at the level of the cortex, that lead to a temporary enhancement of Motor Evoked Potential (MEP) amplitude in target muscles, and when applied repeatedly, lead to a sustained effect, outlasting the intervention period. This repetitive technique has been done in healthy subjects and patients with neurological diseases. By modifying the time between paired stimuli, the investigators will generate afferent/efferent interactions in the spinal cord.

The working hypothesis of this study is that the acute facilitation of the H-reflex during Paired TMS and peripheral nerve stimulation, may be harnessed to modulate spinal excitability (sustained increase in the MEP amplitude). That is, the investigators will test if similar to PAS, a change in excitability outlasting the stimulation/intervention period may occur with afferent/efferent interactions, although at the level of the spinal cord rather than the cortex, and be useful to strengthen residual pathways after damage to the spinal cord. ;

Study Design

Related Conditions & MeSH terms

Spinal Cord Injuries

Clinical Trial Details

NCT number	NCT03592173
Study type	Interventional
Source	Burke Medical Research Institute
Contact	Mar Cortes, MD
Phone	9143683181
Email	mac2083@med.cornell.edu
Status	Recruiting
Phase	Phase 2
Start date	July 2013
Completion date	December 2019

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.