Guentensperger, Dominik and Kleinjung, Tobias and Neff, Patrick and Thuring, Christian and Meyer, Martin (2020) Combining neurofeedback with source estimation: Evaluation of an sLORETA neurofeedback protocol for chronic tinnitus treatment. RESTORATIVE NEUROLOGY AND NEUROSCIENCE, 38 (4). pp. 283-299. ISSN 0922-6028, 1878-3627
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Background: Alpha/delta neurofeedback has been shown to be a potential treatment option for chronic subjective tinnitus. Traditional neurofeedback approaches working with a handful of surface electrodes have been criticized, however, due to their low spatial specificity. Objective: The purpose of this study was to evaluate an innovative tomographic neurofeedback protocol that combines neural activity measured across the whole scalp with sLORETA source estimation. Methods: Forty-eight tinnitus patients participated in 15 neurofeedback training sessions as well as extensive pre, post, and follow-up testing. Patients were randomly assigned to either a tomographic (TONF) or a traditional electrode-based neurofeedback (NTNF) group. Main outcome measures of this study were defined as tinnitus-related distress measured with the Tinnitus Handicap Inventory (THI) and Tinnitus Questionnaire (TQ), tinnitus loudness, and resting-state EEG activity in trained frequency bands. Results: For both groups a significant reduction of tinnitus-related distress and tinnitus loudness was found. While distress changes remained persistent irrespective of group, loudness levels returned to baseline in the follow-up period. No significant between-group differences between the 2 neurofeedback applications (TONF vs. NTNF) were found, which suggests a similar contribution to symptom improvement. The trained alpha/delta ratio increased significantly over the course of the training and remained stable in the follow-up period. This effect was found irrespective of group on both surface and source levels with no meaningful differences between the 2 groups. Conclusions: Our study shows that a tomographic alpha/delta protocol should be considered a promising addition to tinnitus treatment but that more individually specific neurofeedback protocols should be developed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RESOLUTION ELECTROMAGNETIC TOMOGRAPHY; ELECTRICAL-ACTIVITY; HANDICAP INVENTORY; EEG; ADHD; MECHANISMS; DEPRESSION; SEVERITY; PERCEPT; MODEL; Tinnitus; neurofeedback; EEG; alpha; delta; tomographic; sLORETA |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Psychiatrie und Psychotherapie Medicine > Zentren des Universitätsklinikums Regensburg > Tinnituszentrum |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Apr 2021 11:00 |
| Last Modified: | 06 Apr 2021 11:00 |
| URI: | https://pred.uni-regensburg.de/id/eprint/45427 |
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