Schlee, Winfried and Schecklmann, Martin and Lehner, Astrid and Kreuzer, Peter M. and Vielsmeier, Veronika and Poeppl, Timm B. and Langguth, Berthold (2014) Reduced Variability of Auditory Alpha Activity in Chronic Tinnitus. NEURAL PLASTICITY: 436146. ISSN 2090-5904, 1687-5443
Full text not available from this repository. (Request a copy)Abstract
Subjective tinnitus is characterized by the conscious perception of a phantom sound which is usually more prominent under silence. Resting state recordings without any auditory stimulation demonstrated a decrease of cortical alpha activity in temporal areas of subjects with an ongoing tinnitus perception. This is often interpreted as an indicator for enhanced excitability of the auditory cortex in tinnitus. In this study we want to further investigate this effect by analysing the moment-to-moment variability of the alpha activity in temporal areas. Magnetoencephalographic resting state recordings of 21 tinnitus subjects and 21 healthy controls were analysed with respect to the mean and the variability of spectral power in the alpha frequency band over temporal areas. A significant decrease of auditory alpha activity was detected for the low alpha frequency band (8-10 Hz) but not for the upper alpha band (10-12 Hz). Furthermore, we found a significant decrease of alpha variability for the tinnitus group. This result was significant for the lower alpha frequency range and not significant for the upper alpha frequencies. Tinnitus subjects with a longer history of tinnitus showed less variability of their auditory alpha activity which might be an indicator for reduced adaptability of the auditory cortex in chronic tinnitus.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | COORDINATED RESET NEUROMODULATION; OCCIPITAL CORTEX; SYNCHRONIZATION; BRAIN; POWER; DESYNCHRONIZATION; FLUCTUATIONS; PERFORMANCE; INHIBITION; PERCEPTION; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Psychiatrie und Psychotherapie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Dec 2019 08:50 |
| Last Modified: | 02 Dec 2019 08:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10994 |
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