Electrical Stimulation for Paresis
Trial Summary
What is the purpose of this trial?
Vagus nerve stimulation (VNS) is thought to activate neural pathways that release chemicals which promote plasticity and learning. Previous work has shown that the auricular branch of the vagus nerve innervates landmarks on the external ear. Work from the PI's laboratory has shown that electrical current applied to the external ear modulates physiological indexes of brain states implicated in the therapeutic effects of VNS. The broad objective of this project is to better understand physiological mechanisms modulated by auricular stimulation to support possible therapeutic effects in the form of motor learning.
Will I have to stop taking my current medications?
The trial information does not specify whether you need to stop taking your current medications. It's best to discuss this with the study team or your doctor.
What data supports the effectiveness of the treatment Pupil-Indexed Noninvasive Neuromodulation, Auricular Vagus Nerve Stimulation, Transcutaneous Auricular Vagus Nerve Stimulation, Percutaneous Auricular Vagus Nerve Stimulation for paresis?
Research suggests that transcutaneous auricular vagus nerve stimulation (taVNS) may enhance pupil dilation, which is linked to noradrenaline activity in the brain. This indicates a potential mechanism for taVNS to influence brain function, although more studies are needed to confirm its effectiveness for specific conditions like paresis.12345
Is electrical stimulation for paresis generally safe in humans?
Non-invasive vagus nerve stimulation, including transcutaneous auricular vagus nerve stimulation (taVNS), is generally considered safe with only mild and temporary side effects like ear pain, headache, and tingling. There is no evidence of severe adverse events directly caused by taVNS, making it a safe option for clinical use.12678
What makes Pupil-Indexed Noninvasive Neuromodulation unique compared to other treatments for paresis?
Pupil-Indexed Noninvasive Neuromodulation is unique because it uses electrical stimulation of the auricular vagus nerve, which is a nerve in the ear, to potentially influence brain activity and treat conditions like paresis. This method is noninvasive, meaning it doesn't require surgery, and it targets the vagus nerve, which is involved in many bodily functions, making it different from traditional drug treatments.12489
Research Team
Michael A. Urbin, PhD
Principal Investigator
VA Pittsburgh Healthcare System University Drive Division, Pittsburgh, PA
Eligibility Criteria
This trial is for individuals aged 18-75 who have had a stroke at least six months ago, resulting in hand impairment. It's not suitable for those with vestibular disorders, dizziness, ocular diseases affecting both eyes, seizures, epilepsy or incompatible implants. Pregnant women and people in other high-risk studies can't participate.Inclusion Criteria
Exclusion Criteria
Timeline
Screening
Participants are screened for eligibility to participate in the trial
Treatment
Participants receive transcutaneous auricular vagus nerve stimulation (taVNS) with different stimulation protocols to investigate physiological mechanisms and effects on motor learning
Follow-up
Participants are monitored for changes in force control and learning outcomes post-treatment
Treatment Details
Interventions
- Pupil-Indexed Noninvasive Neuromodulation
Pupil-Indexed Noninvasive Neuromodulation is already approved in European Union, United States for the following indications:
- Epilepsy
- Depression
- Pain
- Migraine
- Chronic cervical pain
- Chronic low back pain
- Migraine
- Acute postoperative pain
- Pain due to peripheral arterial occlusive disease
Find a Clinic Near You
Who Is Running the Clinical Trial?
VA Office of Research and Development
Lead Sponsor