Clinical Research Directory

Investigating EEG as a Biomarker for Tinnitus Improvement After Bimodal Stimulation

The aim of the proposed study is to investigate the use of resting-state Electroencephalogram (EEG)-Based Brain Entropy (EBDBE) and auditory brainstem responses (ABR) as an objective measure of tinnitus improvement following the use of a bimodal stimulation device in individuals with tinnitus after six weeks of bi-modal stimulation.

External Therapy for Tinnitus Management

The goal of this remote interventional clinical study is to investigate the use of mild therapeutic hypothermia devices for the symptomatic relief of chronic tinnitus. The main aims of the study are: 1. Ascertain the effects of MTH in chronic tinnitus patients using questionnaires measuring tinnitus severity and intervention-related change. 2. Ascertain the comfort and acceptability of the hypothermia device and therapy. Participants with chronic tinnitus will wear the mild therapeutic hypothermia therapy devices for a single 30 minute session. Researchers will compare results from those receiving therapy to those from a control group.

Noninvasive Therapy for Tinnitus

The goal of this interventional clinical study is to establish mild therapeutic hypothermia, delivered non-invasively to the structures of the inner ear, as a safe and repeatable therapeutic method for symptomatic relief of tinnitus. The study will assess both objective and subjective measures to address two main aims: 1. Ascertain the benefits of mild therapeutic hypothermia for symptomatic relief of chronic tinnitus in participants using the ReBound hypothermia device. 2. Ascertain the benefits of mild therapeutic hypothermia for symptom management in chronic tinnitus participants over six months using the ReBound device. Participants will wear the ReBound hypothermia device for 30 minutes in a single session. Researchers will compare results from those receiving the therapy to those from a control group (sham therapy). Participants will also use the device in-home for 6 months and monitor their symptoms with online surveys.

Emerging Indications for Hyperbaric Oxygen Treatment

This study will evaluate the effectiveness of hyperbaric oxygen therapy (HBOT) on treating emerging indications (i.e., conditions that have shown to potentially benefit from HBOT) using the Multicenter Registry for Hyperbaric Oxygen Treatment. The study team aims to collect ongoing data on how well HBOT treats these emerging indications, and to add these data to the growing HBO Registry. The research team hypothesizes that HBOT will result in improvements of the condition of the various emerging indications.

Notched Noise Therapy for Suppression of Tinnitus

Tinnitus ("ringing in the ears") has long been a problem for Veterans. The problem continues to escalate due to high levels of noise in the military, and because tinnitus often is associated with traumatic brain injury and post-traumatic stress disorder. In spite of limited research support, sound-based (acoustic) therapies are most often used for tinnitus intervention, and increasing numbers of commercial devices are becoming available that offer various acoustic-stimulus protocols. The proposed study will provide evidence from a randomized controlled trial comparing effects of acoustic-stimulus methods that are purported to suppress tinnitus and/or reduce its functional effects. The study will focus on methods with the strongest scientific rationale, i.e., noise that is notched around the predominant tinnitus-frequency region. Special ear-level devices will deliver these acoustic-therapy protocols that are purported to modify tinnitus-related neural activity. The study will follow a study recently completed by the applicant that provides preliminary evidence supporting this method.

Comparing Migraine Preventive Therapies vs. Anti-CGRP Therapies for Tinnitus in Patients With Migraine (COMPACT-PM)

Many people with migraine also experience tinnitus - a persistent ringing, buzzing, or hissing in the ears - and research suggests these conditions share underlying biological mechanisms, including a protein called calcitonin gene-related peptide (CGRP) that is active in both the brain and the inner ear. COMPACT-PM is a randomized trial comparing two classes of migraine preventive medications in adults with bothersome tinnitus and a history of migraine: anti-CGRP therapies (newer injectable or oral agents that block CGRP or its receptor) versus conventional migraine preventives (antidepressants including amitriptyline, nortriptyline, and venlafaxine; antihypertensives including propranolol, verapamil, and candesartan; and the anticonvulsant topiramate). Participants are randomly assigned - like a coin flip - to one of the two treatment groups; neither group receives a placebo, as both receive active migraine treatment. The study's primary outcome is change in the Tinnitus Functional Index (TFI) over 24 weeks, with additional measures including hearing tests, balance assessments, auditory brainstem response testing, and a comprehensive symptom diary. The study is conducted at the Stanford Ear Institute and is funded by a philanthropic gift to the Department of Otolaryngology - Head \& Neck Surgery at Stanford University.

Manual Acupuncture for Acute Primary Tinnitus

This clinical trial aims to assess the efficacy of manual acupuncture for patients with acute primary tinnitus.

Acoustic and Electrical Stimulation for the Treatment of Tinnitus

Tinnitus, or ringing in the ears, affects 10% to 30% of the population. Of those, 20% have tinnitus bothersome enough to seek medical attention. In many people, tinnitus can significantly affect the quality of life. At this point in time, there is no effective treatment or cure available for tinnitus. It has been found that electrical stimulation of the inner ear can reduce and in some cases eliminate tinnitus. The purpose of this research is to investigate both acoustic and electrical stimulation of the inner ear as a possible treatment of tinnitus. In both acoustic and electrical testing conditions, the subjects will be instructed to be familiar with a 0-10 ranking scale of loudness. In acoustic testing, the stimulus will be presented through headphones in a noiseless environment, and the subject will be asked to report on the loudness of the presented sound and the level of the tinnitus at 20-second intervals. If the subject cannot perceive the presence of the tinnitus, a value of zero will be assigned. A typical sound will be presented for 3 to 6 minutes. Loudness will be reported for 1 to 4 minutes after stimulus offset to measure the presence and duration of residual inhibition. Electrical stimulation will be delivered to the inner ear in three ways, 1. using a cochlear implant (implant placed in the inner ear to replace hearing function), 2. Using an electrode placed in the ear canal, and 3. using a small needle inserted through the ear drum. Various electrical signals will be used to evaluate the reduction in the tinnitus perception by the subject. The subjects will rate the loudness of the tinnitus before, during, and after the electrical signal. Surveys will be used to evaluate the tinnitus loudness and the quality of life of the subjects. Hearing tests will be used before and after the procedures. The long term goal of this research is to develop a device to treat tinnitus in people who can hear and to develop programs for cochlear implants that help treat tinnitus in deaf people.

CBT, Breathing Exercises, and Psychoeducation on Tinnitus-Related Distress

Tinnitus is the perception of sound, such as ringing or buzzing, without any external source. It is common and can cause significant distress, including anxiety, depression, sleep problems, and reduced quality of life. Because there is currently no cure for tinnitus, treatment focuses on lowering the distress it causes and helping people cope. This study compared three different non-drug approaches to managing tinnitus-related distress: Cognitive behavioral therapy (CBT), a structured psychological treatment that helps people change unhelpful thoughts and reactions related to their tinnitus A breathing exercise (the 4-7-8 technique), a relaxation method intended to reduce stress Psychoeducation, which provides information to help people better understand their tinnitus Seventy adults with subjective tinnitus, aged 18 to 65, were randomly assigned to one of these three groups. Participants in each group received their assigned approach over a period of several weeks. The main goal was to see how much each approach reduced the impact of tinnitus on daily life, measured with a standard questionnaire called the Tinnitus Handicap Inventory. The study also looked at changes in anxiety and depression. Participants were assessed before treatment, after treatment, and again at 1 month and 6 months. The purpose of this study was to better understand which of these approaches may be most helpful for reducing tinnitus-related distress.

SPI-1005 for Prevention and Treatment of Chemotherapy Induced Hearing Loss

Chemotherapy treatment with platinum based agents is well noted to cause ototoxicity. It is the objective of this study to determine the safety and efficacy of SPI-1005 at three dose levels when delivered orally twice daily for 3 days, surrounding each cycle of platinum chemotherapy in head and neck or non-small cell lung cancer patients to prevent and treat chemotherapy induced hearing loss and tinnitus.

Evaluating How a Tinnitus Implant Affects Tinnitus Loudness in Adults With Chronic Tinnitus and Varying Levels of Hearing Loss

This study will test an experimental Tinnitus Implant System that consists of a cochlear implant, sound processor and programming software. The Tinnitus implant is surgically placed under the skin just behind the ear in the mastoid bone. It has an electrode that extends from the implant into the promontory bone of the cochlea which emits electrical signals that stimulate the auditory nerve. The sound processor is worn behind the ear and powers the implant via the coil. The study will be conducted in adults with moderate to severe chronic tinnitus who have normal hearing to moderately severe hearing loss in the inner ear. The study participants will undergo a series of tests that include evaluations of tinnitus loudness and annoyance, and self-reported questionnaires on their tinnitus and general health.

Assessment of a Novel Sound-based Treatment for Managing Distress Related to Tinnitus

The goal of this clinical trial is to assess the effectiveness of a sound-based passive treatment for reducing stress and annoyance induced by tinnitus, and how this therapy may improve tinnitus sufferers' quality of life. The main questions it aims to answer are: • \[question 1: to assess the efficacy of the LUCID/VIBE in managing the tinnitus handicap (measured by the reducing of the annoyance/stress response to tinnitus) contributing to the improvement of the quality of life of people living with tinnitus\] and • \[question 2: assess the efficacy of LUCID/VIBE in providing temporary relief through masking, such that it results in a reduction of the perceived loudness of tinnitus\]. Participants will \[use the VIBE app for 24 minutes a day for a period of 4 weeks. There will be two conditions, a Noise condition (the control condition in which the investigator will administer white noise) and the VIBE condition (the treatment condition). One approach involves broad-band masking with noise (Noise Condition), while the other uses music (LUCID Condition). Implementation of the noise condition will mirror the LUCID condition in terms of ease of access, look, feel, so that one condition does not look less professional than the other. Both conditions will be administered through the same app, and only the sound conditions will differ (white noise vs. LUCID music). All participants will be exposed to both the treatment and control conditions with the order of conditions counter-balanced (i.e., a cross-over design).

Evaluation of Auditory Mirror-therapy for Tinnitus

The investigators will evaluate the effects of wearing auditory mirror earmuffs on tinnitus and on audiometry.The auditory mirror earmuffs is a device that re-routes auditory input from the left side of the head to the right ear, and vice verse, thereby flipping the auditory input. This procedure is called Auditory Mirror Therapy (AMT).

DMSO Dual-Route Therapy for Refractory Tinnitus in Long-COVID and Post-COVID-19 Vaccine Injury

The goal of this clinical trial is to test a compounded dimethyl sulfoxide (DMSO)-based dual-route therapy for adults with refractory subjective tinnitus linked to long-COVID (post-acute sequelae of SARS-CoV-2) or post-COVID-19 vaccine injury. Participants have bothersome tinnitus that has not improved with at least two prior standard treatments. All participants will receive two study treatments for 30 days: a DMSO-based ear canal liquid and a DMSO-based transdermal cream applied to the skin around the ears and upper neck. The ear drops are used every 4 days, and the cream is applied once daily at bedtime. Both formulations are prepared by a licensed compounding pharmacy. The main question is whether at least half of the participants achieve a 50% or greater reduction in their Tinnitus Handicap Inventory (THI) score from baseline to Day 30. Researchers will also look at changes in tinnitus loudness and annoyance, sleep and concentration, other symptoms such as vertigo, insomnia, headache, and fatigue, and any side effects. After an initial in-person ear, nose, and throat (ENT) evaluation, all study visits are conducted by telemedicine. Participants complete electronic questionnaires through a secure, HIPAA-compliant system over 12 months of follow-up.

Fudan Tinnitus Doctor for Tinnitus Management

The goal of this clinical trial is to evaluate whether a conversational artificial intelligence-based digital intervention can improve symptoms in adults with chronic subjective tinnitus. The main questions it aims to answer are: Does the Fudan Tinnitus Doctor (FTD) system reduce tinnitus severity as measured by the Tinnitus Handicap Inventory (THI). Does the FTD system improve sleep quality, anxiety, depression, and overall patient-reported outcomes. Researchers will compare the FTD system to a non-conversational digital education program to determine whether the AI-based intervention provides greater clinical benefits. Participants will: Use either the FTD conversational AI system or a static digital education program for 30 days. Complete standardized questionnaires assessing tinnitus severity, sleep, mood, and overall improvement at baseline, Day 14, and Day 30. Engage with the digital platform for tinnitus self-management.

Efficacy and Safety of the Soricle for Subjective Tinnitus Relief

This study was conducted to evaluate the efficacy and safety of Soricle, a medical device combining transcutaneous vagus nerve stimulation and sound stimulation, in patients with subjective tinnitus. Participants were randomly assigned to either the active treatment group or a sham control group in a double-blind manner. The device was used daily for 8 weeks. The primary objective was to assess the improvement in tinnitus symptoms, and safety was evaluated throughout the study period.

Treatment of Tinnitus With Migraine Medications

Tinnitus represents one of the most common and distressing otologic problems, and it causes various somatic and psychological disorders that interfere with the quality of life. In addition, it contributes significant costs to the healthcare system. However, the mechanisms of tinnitus are poorly understood. and there is currently no FDA-approved medication to treat this condition. Current pharmacological treatment options address the stress, anxiety, and depression that are caused by tinnitus. There is an increased evidence of an epidemiological and mechanistic association between tinnitus and migraine. Therefore, in this study, we intended to evaluate the effectiveness of two combinations of migraine medications on patients with moderate to severe tinnitus by comparing them to placebo.

Efficacy of Acupuncture on Chronic Tinnitus and Its Association With Auditory Brainstem Response Measures

The goal of this clinical trial is to learn if acupuncture works to treat chronic tinnitus in adults. It will also learn about the neurophysiological effects of acupuncture on auditory conduction pathway function. The main questions it aims to answer are: Does acupuncture lower tinnitus-related disability and severity, as measured by the Tinnitus Handicap Inventory (THI) and Tinnitus Effects Questionnaire (TEQ)? What changes in auditory brainstem response (ABR) parameters-such as wave I amplitude and wave V latency-occur after acupuncture treatment, and do these changes correlate with clinical improvement? Researchers will compare ABR parameters and clinical outcomes between chronic tinnitus patients and age- and sex-matched healthy controls to characterize tinnitus-related abnormalities. Additionally, the study will evaluate changes within the patient group before and after a 10-session acupuncture course to assess treatment efficacy and explore its neurophysiological mechanisms.

Bimodal Electrical-Sound Stimulation and Auditory Training for Chronic Tonal Tinnitus

This study tests whether pairing non-invasive stimulation of the greater occipital nerve (NITESGON) with an attentionally demanding auditory frequency discrimination training task reduces tinnitus loudness and tinnitus-related distress. One hundred adults with chronic tonal tinnitus will be randomised to one of four groups in a 2×2 factorial design: real versus sham NITESGON and active versus passive listening during auditory stimulation. Participants complete eight sessions across four weeks, with outcomes assessed at baseline, end of treatment, 28 days post-treatment, and 6 months post-treatment.

The Effect of Mild-gain Amplification on Tinnitus Perception in Normal Hearing Adults

This study investigated the effect of mild gain amplification (8dB covering 1 Hz to 8kHz) as tinnitus treatment for participants with normal hearing and compared these effects with an active placebo condition using hearing aids without amplification in a double-blinded crossover study. 12 participants with normal hearing and chronic tinnitus were included in the study. Two different hearing aid treatments were provided for 3 weeks each: mild gain amplification that provided 8dB gain in the frequency range from 1 Hz to 8 kHz and no amplification, acting as placebo. The effect of the two treatments on tinnitus distress was evaluated with the Tinnitus Functional Index (TFI) questionnaire. The effect of the treatment on tinnitus loudness and annoyance were evaluated with a visual analog scale (VAS).

The Effects of Conventional Therapy on Tinnitus, Disability, and Quality of Life in Patients With Tinnitus

A randomized, single-blind, controlled trial to evaluate the effects of neural therapy on tinnitus severity, disability, and quality of life in patients with tinnitus. The study is planned to be conducted between December 2025 and March 2026. The sample size is 30 patients. The number of centers is 1. The study duration is 3 months.

Apple Hearing Study

The Apple Hearing Study is a partnership between the University of Michigan and Apple to study sound exposure and its impact on hearing health. This groundbreaking study will advance the understanding of how hearing could be impacted over time by exposure to sound at certain levels. The investigators will measure headphone and environmental sound exposures over time among participants, and determine how these exposures impact hearing and stress levels. US residents who own an iPhone, download the Apple Research app and consent to participate will be randomly assigned to two groups, one with a "Basic" user interface in the Research app, and one with an "Advanced" user interface. Users in the "Advanced" group will receive additional information about their exposures and be given additional surveys and hearing tests based on their music and environmental sound exposures. The study will provide investigators with a better understanding of listening behavior and its overall impact on hearing health. This information will in turn help guide public health policy and prevention programs designed to protect and promote hearing health in the US and globally.

Regenerative Medicine and Stem Cell-Based Interventions for Inner Ear Trauma, Tinnitus, and Sensorineural Hearing Loss

The HEAR-RESTORE study is an exploratory clinical research program designed to evaluate new diagnostic and regenerative approaches for individuals experiencing inner ear injury, tinnitus, and temporary or permanent hearing loss. Inner ear disorders can result from acoustic trauma, infections, inflammation, or other conditions that affect the cochlea, auditory nerve, or vestibular system. These conditions may lead to muffled hearing, ringing in the ears (tinnitus), balance disturbances, or reduced hearing sensitivity. The purpose of this study is to better understand how inner ear injuries develop and to evaluate potential treatments that may support hearing recovery or protect auditory function. Participants will undergo comprehensive ear and hearing evaluations including audiometry, speech recognition testing, tympanometry, and other diagnostic assessments used in audiology and otolaryngology. These tests help measure hearing thresholds, ear pressure, and auditory nerve responses. The study may also explore emerging regenerative medicine strategies aimed at restoring inner ear function. These approaches may include investigational therapies designed to promote repair of cochlear hair cells, reduce inflammation in the inner ear, or support neural recovery in the auditory pathway. Research may include evaluation of regenerative biological therapies, stem cell-based approaches, and other experimental technologies intended to support recovery of hearing or reduce symptoms such as tinnitus. Participants will be monitored over time to assess hearing outcomes, safety, and changes in auditory function. Study assessments may include repeat audiology tests, imaging studies, symptom questionnaires, and other clinical measurements used to track hearing health. The results of this research may contribute to improved diagnostic methods and potential future treatments for individuals with hearing loss or inner ear disorders.

CBCT and Audiological Analysis of the TMJ-Tinnitus Relationship

The aim of this study is to investigate the relationship between Temporomandibular Disorders (TMD) and subjective tinnitus at both morphological and functional levels. Current literature suggests that somatosensory inputs from the temporomandibular joint (TMJ) and masticatory muscles can modulate auditory pathways, a phenomenon known as Somatosensory Tinnitus. However, the specific role of TMJ bone morphology and critical neighboring structures, such as the Petrotympanic Fissure (PTF), in this interaction remains unclear. In this clinical study, patients with tinnitus will undergo a comprehensive evaluation including Cone Beam Computed Tomography (CBCT) to quantitatively analyze condylar morphology and osteoarthritic changes. Additionally, audiological tests will be performed to assess the functional state of the auditory system. This multidisciplinary approach aims to clarify the biological link between TMD and tinnitus, potentially improving diagnostic protocols and highlighting the importance of TMJ stabilization in tinnitus management.