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Pupil dilation may reveal secrets of hearing nerve

NCT ID NCT05870527

Knowledge-focused Sponsor: NYU Langone Health Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only This study
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how stimulating a nerve in the ear affects pupil size during cochlear implant surgery. Researchers will measure pupil dilation in 30 adults to learn more about the vagus nerve's role in hearing. The goal is to gather knowledge, not to treat hearing loss directly.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Electrical stimulator
What this could lead to
If successful, this could help doctors better understand how the vagus nerve affects hearing, potentially improving cochlear implant outcomes.
What could go wrong
This is a very small, early study with only 30 participants, focused on measuring pupil size rather than treating hearing loss. It may not lead to any direct benefit for patients.

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 30 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2023

Expected to finish

Jun 2026

An estimate. End dates often move.

Lead sponsor

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

18 years and older

Sex

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Patients undergoing cochlear implantation: * will be undergoing surgery for a cochlear implant * is over the age of 18 * is willing to participate in the study Patients undergoing vagal nerve stimulator implantation: * will be undergoing implantable vagal nerve stimulation * is over the age of 18 * is willing to participate in the study Exclusion Criteria: Patients undergoing cochlear implantation: * is under the age of 18 * has history of prior ear surgery, congenital ear malformation, or cochlear implantation * pregnant or breastfeeding patients cannot undergo the standard-of-care implantation procedures required for participation in the study. * medical comorbidities resulting in exclusion are guided by the AANS exclusion criteria for VNS and include the following: * One vagus nerve * Receiving other concurrent forms of brain stimulation * Heart arrhythmias or other heart abnormalities * Dysautonomias (abnormal functioning of the autonomic nervous system) * Lung diseases or disorders (shortness of breath, asthma, etc.) * Ulcers (gastric, duodenal, etc.) * Vasovagal syncope (fainting) * Pre-existing hoarseness Patients undergoing vagal nerve stimulator implantation: * is under the age of 18 * has history of prior ear surgery, congenital ear malformation, or cochlear implantation * pregnant or breastfeeding * medical comorbidities resulting in exclusion are guided by the AANS exclusion criteria for VNS and include the following: * One vagus nerve * Receiving other concurrent forms of brain stimulation * Heart arrhythmias or other heart abnormalities * Dysautonomias (abnormal functioning of the autonomic nervous system) * Lung diseases or disorders (shortness of breath, asthma, etc.) * Ulcers (gastric, duodenal, etc.) * Vasovagal syncope (fainting) * Pre-existing hoarseness

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Conditions

The condition(s) this trial relates to.

hearing loss disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Hearing loss

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • NYU Langone Health

    New York, New York, 10016, United States

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