Efficacy of Transcutaneous Vagus Nerve Stimulation Paired With Tailor-Made Notched Music Therapy Versus Tailor-made Notched Music Training for Chronic Subjective Tinnitus

The pulse frequency of vagus nerve stimulation is 25 Hz, the pulse width is 200 US, and the intensity is 1-10 mA. Tailor-made notched music is produced by filtering a frequency band of 1/2 octave width centered at the individual tinnitus frequency. When two sides of tinnitus frequencies are different, each side of music are filtered respectively, according to the different tinnitus frequency. When only have unilateral tinnitus or bilateral tinnitus in the same central frequency, both sides of music are filtered with the same tinnitus frequency. The tVNS and TMNM begin at the same time during treatment.

Tailor-made notched music is produced by filtering a frequency band of 1/2 octave width centered at the individual tinnitus frequency. When two sides of tinnitus frequencies are different, each side of music are filtered respectively, according to the different tinnitus frequency. When only have unilateral tinnitus or bilateral tinnitus in the same central frequency, both sides of music are filtered with the same tinnitus frequency. At the beginning of TMNMT, 10 seconds sham vagus nerve stimulation is output, whose parameters are as same as experimental group.