Repetitive Transcranial Magnetic Stimulation for Tinnitus Treatment

December 6, 2012 updated by: Singapore General Hospital
In this study, we perform an open-label rTMS over the left AC on patients with tinnitus. Outcome measures will be evaluated statistically. The results will be instrumental in deciding the efficacy of this technique in a local patient group.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Tinnitus is a subjective auditory perception of sounds or noise not triggered by external auditory stimuli, affecting millions of people worldwide. To date, pharmacological and physical/ behavioural treatments in severe cases are generally unsatisfactory. Functional brain imaging changes associated with tinnitus include hyperactivity of discrete temporoparietal regions, including both the primary auditory cortex (AC) and the secondary, or associative cortex. High-frequency rTMS (10 Hz or more) applied on the scalp overlying the hyperactive left AC produced an intense tinnitus attenuation.

Repetitive TMS consists of 1000 stimulations/ day at 1 Hz and 110% of the motor threshold, for five consecutive days over the left AC. A high number of stimuli/day were applied because of the previously suggested dose dependency of tinnitus alleviation by rTMS. Furthermore, the use of such relatively high intensity assured the stimulation of most of the target region, even in the case of mismatch between the scalp position and the underlying anatomy, which can be expected using the International EEG system as anatomical reference for TMS stimulation.

Upon recruitment, all patients will undergo a 1 week treatment consisting of 5 rTMS sessions. Tinnitus rating will be performed weekly.

Tinnitus is rated by a 0-100 Visual Analogue Scale (VAS), where 0 is wellness and 100 the worst possible tinnitus related discomfort. In addition, our validated Tinnitus Inventory scoring will be administered. Audiometry and otoscopy will be performed at enrolment and at the end of the study. Tinnitus, and acoustic evaluations are then collected by experimenters blind to the type of rTMS applied.

Standard statistical methods (SPSS for Windows) will be used to perform comparisons.

Study Type

Interventional

Enrollment (Anticipated)

100

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Singapore
    • Outram Road
      • Singapore, Outram Road, Singapore, 169608
        • Recruiting
        • Singapore General Hospital
        • Contact:
        • Principal Investigator:
          • YL Lo, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

21 years to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • All patients with tinnitus

Exclusion Criteria:

  • Patients with contraindications to TMS: pacemaker, intracranial surgery, implants and seizures

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Tinnitus Inventory Handicap scoring & Visual Analogue Scale (VAS)
Time Frame: Baseline, 1,2,3 & 4weeks after treatment
THI and VAS is measure before the treatment and weekly for 4 weeks after the treatment.
Baseline, 1,2,3 & 4weeks after treatment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Singapore General Hospital

Investigators

  • Principal Investigator: YL Lo, MD, National Neuroscience Institute, Singapore General Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2008

Primary Completion (Anticipated)

August 1, 2013

Study Completion (Anticipated)

August 1, 2013

Study Registration Dates

First Submitted

March 24, 2010

First Submitted That Met QC Criteria

March 24, 2010

First Posted (Estimate)

March 26, 2010

Study Record Updates

Last Update Posted (Estimate)

December 10, 2012

Last Update Submitted That Met QC Criteria

December 6, 2012

Last Verified

August 1, 2012

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • #2008/061/A

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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