VitalFlow Healthy Volunteer Study

Study Overview
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Brief Summary
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Find the stimulation threshold of the facial nerve (ganglion Geniculate) associated with tolerability and safety in subjects Healthy humans.

Detailed Description
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Magnetic stimulation of the facial nerve (geniculate ganglion) in humans can induce changes in cerebral blood flow safely, without generating adverse effects unknown to the technique. Our specific objectives: Perform tolerability and safety tests of magnetic stimulation on the facial nerve. Establish the optimal stimulation threshold associated with tolerability in order to apply it to the final design of the Magnetic Stimulation (MS) system. Measure whether the threshold found shows any increase in cerebral perfusion in the subject with respect to their baseline.

Official Title
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Determination of Threshold of Stimulation, Tolerability and Safety of Magnetic Nerve Stimulation In Healthy Subjects: an Exploratory Study

Conditions
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Normal Subject / Healthy Volunteers

Intervention / Treatment
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* Device: magnetic facial nerve stimulation


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy subjects Normal audiometry chart (Evaluated at the time of your inclusion). Normal neurological examination at time of inclusion. Exclusion Criteria: Subjects with a diagnosis of epilepsy, seizures, facial nerve palsy, migraine or recurrent headaches, glaucoma or neuropathies. Subjects in breastfeeding or in pregnancy. (To be confirmed with test strip). Subjects with acute or acute chronic medical conditions. Age less than 20 years or greater than 40 years. Carotid surgery. Episodes of syncope. Known arteriosclerosis anywhere on the body Metal implants (cochlear implants, pacemakers, metal prostheses). Intracranial abnormalities observed by MRI or MRA (Evaluated at time of inclusion of the subject). Intraocular pressure> 22mmHg (Evaluated at time of inclusion of the subject)

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Interventional Model Description: Prospective
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Vitalflow treatment<br>The subject's exposure will be through a ramp model of increments in magnetic stimulation power delivered to the facial nerves bilaterally. Increases in magnetic stimulation will be 10% for 10 seconds from 10% to 60%. Subsequent to this will be evaluated for 5 minutes in the power of tolerability of the subject (60% 70%, 80% or 90%). | Device: magnetic facial nerve stimulation<br>* Magnetic stimulation of facial nerve.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in perfusion index of cerebral blood flow | An algorithm to calculate the perfusion index using magnetic resonance images across the entire brain | 10 minutes post-stimulation | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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facial nerve, magnetic stimulation, cerebral blood flow