An interventional study of Repetitive Transcranial Magnetic Stimulation (rTMS) in Tinnitus, sponsored by Singapore General Hospital. Status unknown at 1 site in Singapore. Open to participants aged 21 Years to 90 Years. Per ClinicalTrials.gov, last updated 2012-12-10.
Sponsored by Singapore General Hospital · Not applicable, Interventional, and Treatment
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.
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.
412 studies on the registry are indexed under Tinnitus; 87 are open to participants now.
This study's planned enrollment of 100 is above the median of 60 across 339 interventional studies indexed under Tinnitus.
Browse Tinnitus studies →Singapore General Hospital is the lead sponsor of 266 studies on the registry; 57 are open to participants now.
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Exclusion Criteria:
Upon recruitment, all patients will undergo a 1 week treatment consisting of 5 rTMS sessions Repetitive TMS consists of 1000 stimulations/ day at 1 Hz and 110% of the motor threshold, for five consecutive days over the left AC.
Tinnitus Inventory Handicap scoring & Visual Analogue Scale (VAS)
THI and VAS is measure before the treatment and weekly for 4 weeks after the treatment.
Time frame: Baseline, 1,2,3 & 4weeks after treatment
This study is status unknown, as verified in Aug 2012. You cannot join it, but the record below documents what was studied.
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Singapore General Hospital