Combining Transcranial Direct Current Stimulation and Tailor-Made Notched Music Training to decrease tinnitus-related distress – a pilot study

The central auditory system has a crucial role in tinnitus generation and maintenance. Curative treatments for tinnitus do not yet exist. However, recent attempts in the therapeutic application of both acoustic stimulation/training procedures and electric/magnetic brain stimulation techniques have y...

Authors: Teismann, Henning
Wollbrink, Andreas
Okamoto, Hidehiko
Schlaug, Gottfried
Rudack, Claudia
Pantev, Christo
Division/Institute:FB 05: Medizinische Fakultät
Document types:Article
Media types:Text
Publication date:2014
Date of publication on miami:17.03.2014
Modification date:16.04.2019
Edition statement:[Electronic ed.]
Source:PLoS ONE 9 (2014) 2, e89904
DDC Subject:610: Medizin und Gesundheit
License:CC BY 4.0
Language:English
Notes:Finanziert durch den Open-Access-Publikationsfonds 2013/2014 der Deutschen Forschungsgemeinschaft (DFG) und der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Format:PDF document
URN:urn:nbn:de:hbz:6-83389591581
Permalink:http://nbn-resolving.de/urn:nbn:de:hbz:6-83389591581
Other Identifiers:DOI: 10.1371/journal.pone.0089904
Digital documents:journal.pone.0089904.pdf

The central auditory system has a crucial role in tinnitus generation and maintenance. Curative treatments for tinnitus do not yet exist. However, recent attempts in the therapeutic application of both acoustic stimulation/training procedures and electric/magnetic brain stimulation techniques have yielded promising results. Here, for the first time we combined tailor-made notched music training (TMNMT) with transcranial direct current stimulation (tDCS) in an effort to modulate TMNMT efficacy in the treatment of 32 patients with tonal tinnitus and without severe hearing loss. TMNMT is characterized by regular listening to so-called notched music, which is generated by digitally removing the frequency band of one octave width centered at the individual tinnitus frequency. TMNMT was applied for 10 subsequent days (2.5 hours of daily treatment). During the initial 5 days of treatment and the initial 30 minutes of TMNMT sessions, tDCS (current strength: 2 mA; anodal (N = 10) vs. cathodal (N = 11) vs. sham (N = 11) groups) was applied simultaneously. The active electrode was placed on the head surface over left auditory cortex; the reference electrode was put over right supra-orbital cortex. To evaluate treatment outcome, tinnitus-related distress and perceived tinnitus loudness were assessed using standardized tinnitus questionnaires and a visual analogue scale. The results showed a significant treatment effect reflected in the Tinnitus Handicap Questionnaire that was largest after 5 days of treatment. This effect remained significant at the end of follow-up 31 days after treatment cessation. Crucially, tDCS did not significantly modulate treatment efficacy - it did not make a difference whether anodal, cathodal, or sham tDCS was applied. Possible explanations for the findings and functional modifications of the experimental design for future studies (e.g. the selection of control conditions) are discussed.