Ear zaps may ease Parkinson's speech and movement woes
NCT ID NCT07588191
First seen Jun 25, 2026 · Last updated Aug 07, 2026 · Updated 2 times
Summary
This study tests whether mild electrical stimulation of the ear, combined with physical and speech therapy, can improve symptoms like voice problems, swallowing, and balance in people with Parkinson's disease. 46 participants will receive either active or sham stimulation during 12 sessions over 4 weeks, with follow-up at 8 weeks. The goal is to see if this non-invasive approach can make daily life easier.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- transcutaneous electrical nerve stimulation (TENS) of the vagus nerve in the ear
- What this could lead to
- If it works, this could offer a non-invasive way to ease speech, swallowing, and movement problems in Parkinson's disease.
- What could go wrong
- This is a small, early-stage trial with only 46 people. The effects may be modest or not last, and the stimulation might not work for everyone.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
About 46 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
May 2026
- Expected to finish
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Nov 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Being a member of the Association or be interested in joining; * Idiopathic PD diagnosis, stages 2-3 according to the Hoehn \& Yahr scale; confirmed by neurologist * Ability to walk independently for at least 1 minute ant turn 180° without assistance; * Exhibiting symptoms of hypokinetic dysarthria; * On stable dopaminergic therapy for at least 1 month prior to the experiment Exclusion Criteria: * Any contraindication for taVNS (e.g., ear lesions, pacemakers, defibrillators, or other electronic devices) * Previous vagotomy or previous application of electrical stimulation to the ear or brain, or treatment with high-intensity focused ultrasound (HIFU) * Voice or speech disorders caused by other medical conditions * MoCA score below 21 * Psychotic symptoms or hallucinations; a diagnosis of psychiatric illness * Systolic blood pressure above 160 mm Hg, and diastolic blood pressure above 100 mm Hg * Inability to attend sessions; * Concomitant neurological, orthopaedic, cardiac, respiratory or active medical/oncological condition that would affect participation
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Association of Parkinson´s Disease Galicia- Coruña
A Coruña, 15008, Spain
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Other studies related to the condition(s) this trial covers.
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