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Prolonged tinnitus suppression after short-term acoustic stimulation
Patrick K A Neff1, Stefan Schoisswohl2, Jorge Simoes2
1Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany; University Research Priority Program "Dynamics of Healthy Aging", University of Zurich, Zurich, Switzerland.
Progress in Brain Research
|May 1, 2021
Summary
Prolonged residual inhibition (PRI) occurs in about 5% of tinnitus patients after acoustic stimulation. This phenomenon, lasting hours to days, may offer insights for personalized tinnitus treatments.
Area of Science:
- Audiology
- Neuroscience
- Otolaryngology
Background:
- Residual inhibition (RI) is tinnitus suppression after acoustic stimulation.
- Prolonged RI (PRI) can last for hours or days post-stimulation.
- Mechanisms and evidence for PRI are currently limited and anecdotal.
Purpose of the Study:
- To collect and analyze cases of PRI from acoustic stimulation studies.
- To better understand the phenomenon of PRI.
- To explore implications of PRI for individualized tinnitus treatments.
Main Methods:
- Pooled PRI cases from four studies (n=130).
- Defined PRI duration as at least twice the acoustic stimulation duration.
- Analyzed participant demographics and stimulus characteristics.
Main Results:
- Approximately 5% of participants experienced PRI (3-7% across studies).
- PRI duration ranged from 20 minutes to several days.
- PRI predominantly occurred in females and when stimuli matched tinnitus frequency/type.
Conclusions:
- PRI is observed in a small subset of tinnitus patients, suggesting potential for personalized treatments.
- Further research is needed on factors influencing PRI, such as stimulus characteristics and patient sex.
- Integrating neurophysiological methods could enhance understanding of PRI mechanisms.
