The Effects of Compensatory Auditory Stimulation & Transcranial Direct

Status Completed

Clinical Trial Summary

This study evaluates the ability of compensatory auditory stimulation (CAS) and transcranial direct current stimulation (tDCS) to help alleviate tinnitus. Subjects will receive CAS, tDCS, and the combination of the two to assess the effectiveness of the treatment.

Clinical Trial Description

Tinnitus refers to persistent "ringing in the ears" in absence of external sound. For some individuals tinnitus can be disabling. Most tinnitus is of idiopathic origin and currently there are no reliable treatment options available. Existing approaches, such as hearing aids, counseling, and noise masking typically provide only partial relief and only for a minority of patients. Newer exploratory methods include tailored auditory stimulation and various brain stimulation techniques. While these techniques show great promise in a subset of subjects (maybe about 1/3), it is hard to anticipate which, if any, will benefit a given patient.

Transcranial Direct Current Stimulation (tDCS) has been explored for a number of neurological conditions, and it is most effective when paired with some form of training (e.g. motor rehab after stroke). For tinnitus however this treatment modality has only been tested in isolation. The purpose of this pilot study is to explore the benefits of combining tailored compensatory auditory stimulation with tDCS.

There is widespread consensus in the research community that tinnitus originates with some peripheral hearing deficit, and that maladaptive central plastic mechanisms subsequently lead to the tinnitus percept. Most individuals with tinnitus have audiometric evidence of hearing loss. Our hypothesis is that reduced input to the auditory pathway leads to increased sensitivity (auditory gain) and finally aberrant activity in the frequency band with hearing loss. In this view, auditory stimulation that compensates for the reduced input can potentially revert the maladaptive plasticity.This is consistent with the reported benefits of hearing aids and tailored auditory stimulation. Our hypothesis is that tDCS can boost adaptation induced by compensatory auditory stimulation to reduce the strength of the phantom percept. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment

Related Conditions & MeSH terms

Tinnitus

Clinical Trial Details

NCT number	NCT02648542
Study type	Interventional
Source	Soterix Medical
Contact
Status	Completed
Phase	N/A
Start date	March 2013
Completion date	July 2014

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

The Effects of Compensatory Auditory Stimulation and Transcranial Direct Current Stimulation on Tinnitus Perception

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms