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Characterizing the nature and severity of tinnitus in individuals presents a particular challenge. The nature of the sound (loudness and pitch) is not necessarily indicative of the effect on quality of life. Different methods are used to measure each parameter. Loudness is measured using a technique called "minimum masking," in which the subject is presented with a broadband white noise and asked to adjust the loudness level until they can no longer hear their tinnitus. Severity of tinnitus is commonly characterized using two questionnaires: the Tinnitus Handicap Inventory (THI) and the Tinnitus Functional Index (TFI). These questionnaires assess the perceived severity of the tinnitus and the effect on everyday activities and quality of life. A visual analog scale (a scale from 0-10) is used as a general subjective measurement of tinnitus severity. In the first part of this study, we will measure each of these parameters over a series of sessions to establish a baseline variability for each individual.
The second part will look at the influence of context-specific visual information on auditory perception. This involves watching silent videos of a person speaking, with and without an additional tone designed to match the subject's tinnitus. The effect of this audiovisual feedback on the subject's perception of tinnitus will be assessed using a subjective rating scale and the minimum masking task.
This study is not specifically seeking to treat tinnitus, but is designed to investigate various parameters that can alter the tinnitus percept. Findings from this study will help identify parameters that can be more effective at decreasing or fully suppressing the tinnitus percept that will be systematically explored in a follow-up study.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Characterization, Audiovisual | Experimental | Characterization: Tinnitus characterization tools (Minimal Masking Level, Tinnitus Functional Index, Tinnitus Handicap Inventory, and Subjective rating scale) are assessed in an individual over time to determine baseline variability. Audiovisual: The individual will watch a series of silent videos of a person speaking, both with and without a tone matched to their tinnitus as well as videos of a still face with and without the matched tone. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Tone | Other | Band-limited white noise stimulus or frequency-matched tone presented at a comfortable loudness level via headphones or earphones. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in Minimal Masking Level | A narrowband noise (from 2-12 kHz) is presented to the tinnitus ear and the minimum sound level (in decibel sound pressure level, decibel SPL) is determined that completely masks the tinnitus percept. | Change in baseline level at an expected average of 1 minute and 1.5 hours after testing paradigm. |
| Change in Tinnitus Rating (0-10, 10 being worst) | the subject rates the disturbance or bothering nature of the tinnitus. | Change in baseline rating at an expected average of 4 minutes and 1.5 hours after testing paradigm |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Tinnitus Functional Index Questionnaire Score | A series of questions to assess the quality and bothering nature of the tinnitus, which is then quantified into a single score. | Change from baseline score at an expected average of 5 minutes and 1.5 hours after testing paradigm |
| Change in Tinnitus Handicap Inventory Questionnaire Score |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Hubert Lim, PhD | University of Minnesota | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Minnesota, Nils Hasselmo Hall, 6-105 | Minneapolis | Minnesota | 55455 | United States |
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| ID | Term |
|---|---|
| D014012 | Tinnitus |
| D012001 | Hyperacusis |
| ID | Term |
|---|---|
| D006311 | Hearing Disorders |
| D004427 | Ear Diseases |
| D010038 | Otorhinolaryngologic Diseases |
| D012678 | Sensation Disorders |
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| ID | Term |
|---|---|
| D014743 | Videotape Recording |
| ID | Term |
|---|---|
| D013637 | Tape Recording |
| D001296 | Audiovisual Aids |
| D018961 | Educational Technology |
| D013672 | Technology |
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| Video | Other | Silent video recording of a person speaking or a still face with an expanding circle over the mouth presented on a computer or tablet screen. |
|
A series of questions to assess the quality and bothering nature of the tinnitus, which is then quantified into a single score. |
| Change from baseline score at an expected average of 5 minutes and 1.5 hours after testing paradigm |
| Change in Tinnitus Subjective Description | The subject describes the quality, characteristics, and bothering nature of the tinnitus. | Change in baseline description at an expected average of 5 minutes and 1.5 hours after testing paradigm |
| D009461 |
| Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D013676 |
| Technology, Industry, and Agriculture |
| D013690 | Television |