Measuring Vestibular Organ Function With Weak Alternating Current Stimulation
NCT ID: NCT07267910
Last Updated: 2025-12-05
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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NOT_YET_RECRUITING
NA
30 participants
INTERVENTIONAL
2026-01-31
2027-12-31
Brief Summary
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* Can electrical vestibular stimulation combined with movement measurement be used to diagnose disorders of the vestibular system?
* Can electrical stimulation provide treatment or rehabilitation opportunities for patients suffering from disorders of the vestibular system?
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Detailed Description
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The goal of the study is to collect and analyse data from 30 research participants with diagnosed vestibular disorders.
Conditions
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Study Design
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NA
SINGLE_GROUP
DIAGNOSTIC
NONE
Study Groups
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EVS + measurement
The study composes of multiple interventions (1-3 min electrical vestibular stimulation and response measurement). All study participants will get the same interventions but in different randomized order.
Active transcranial electrical vestibular stimulation (Active EVS)
Active transcranial electrical vestibular stimulation (EVS) with alternating current (maximum peak current below 2 mA and stimulation frequency 2-20 Hz) applied for 1-3 minutes at a time and for under 20 minutes in total. EVS will be applied either bilaterally (ear to ear) or unilaterally (left ear to neck or right ear to neck). The participants movements during the stimulation are measured with a force plate and wearable acceleration sensors. The study uses multiple types of vestibular stimulation waveforms which are applied in a randomized sequence, such that neither the participant nor the investigator know the exact stimulation type at the time of the measurement.
Sham transcranial electrical vestibular stimulation (Sham EVS)
Sham (no current) transcranial electrical vestibular stimulation applied for 1-3 minutes. The participant's movements during the supposed stimulation are measured with a force plate and wearable acceleration sensors. Neither the participant nor the investigator know at what point of the intervention sequence the sham stimulation is applied.
Control measurement
The participant's movements are measured with a force plate and wearable acceleration sensors for the same time duration (1-3 min) and following the same protocols as in other interventions, but both the participant and the investigator know that no stimulation is being applied. The control measurement will always be completed before all other interventions and is not part of the randomized intervention sequence.
Interventions
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Active transcranial electrical vestibular stimulation (Active EVS)
Active transcranial electrical vestibular stimulation (EVS) with alternating current (maximum peak current below 2 mA and stimulation frequency 2-20 Hz) applied for 1-3 minutes at a time and for under 20 minutes in total. EVS will be applied either bilaterally (ear to ear) or unilaterally (left ear to neck or right ear to neck). The participants movements during the stimulation are measured with a force plate and wearable acceleration sensors. The study uses multiple types of vestibular stimulation waveforms which are applied in a randomized sequence, such that neither the participant nor the investigator know the exact stimulation type at the time of the measurement.
Sham transcranial electrical vestibular stimulation (Sham EVS)
Sham (no current) transcranial electrical vestibular stimulation applied for 1-3 minutes. The participant's movements during the supposed stimulation are measured with a force plate and wearable acceleration sensors. Neither the participant nor the investigator know at what point of the intervention sequence the sham stimulation is applied.
Control measurement
The participant's movements are measured with a force plate and wearable acceleration sensors for the same time duration (1-3 min) and following the same protocols as in other interventions, but both the participant and the investigator know that no stimulation is being applied. The control measurement will always be completed before all other interventions and is not part of the randomized intervention sequence.
Eligibility Criteria
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Inclusion Criteria
* One of the following: clinically diagnosed vestibular schwannoma, vestibular neuritis, or simultaneous unilateral hearing loss and vestibular dysfunction.
Exclusion Criteria
* Past brain surgery
* Pacemaker, cochlear implant, or other implanted medical device
* Pregnancy
* Skin problems or damaged skin at the site of the stimulation (scalp and neck)
18 Years
70 Years
ALL
No
Sponsors
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Helsinki University Central Hospital
OTHER
Business Finland
OTHER
Aalto University
OTHER
Responsible Party
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Principal Investigators
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Ilkka Laakso, D.Sc. (Tech)
Role: PRINCIPAL_INVESTIGATOR
Aalto University
Topi Jutila, MD, PhD
Role: PRINCIPAL_INVESTIGATOR
HUS Helsinki University Hospital
Locations
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Dept. of Otorhinolaryngology, HUS Helsinki University Hospital
Helsinki, , Finland
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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VESTI
Identifier Type: -
Identifier Source: org_study_id
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