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| Name | Class |
|---|---|
| Toronto Metropolitan University | OTHER |
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The purpose of the current study is to measure oxygenation in the PFC using fNIRS in a sample of older adults with hearing loss. Adults with hearing loss will be asked to repeat the final word from low-context sentences in noise at two SNRs; a hard SNR (individually-measured SNR-50), and an easy SNR (SNR-50 + 10 dB) both without and with hearing aids set to a directional mode. The procedure will be a within-subject repeated measures. Stimuli will be randomized.
See above.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Participants with hearing loss. | Experimental | Participants with hearing loss. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Hearing aids | Device | Participants will listen to stimuli in the environment while wearing hearing aids which should make the stimuli more audible. Speech in noise performance is expected to improve and PFC oxygenation is expected to be reduced in this condition. |
| Measure | Description | Time Frame |
|---|---|---|
| Listening effort | Listening effort inferred from infrared light scattered from the prefrontal cortex, which is indicative of concentration of oxygenated blood in that region. A higher concentration is indicative of more listening effort. | Up to 2 hours during 1 session |
| Speech-in-noise performance | Number of words repeatedly correctly for a given listening condition. | Up to 2 hours during 1 session |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Jinyu Qian, PhD | Sonova AG | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sonova Innovation Centre Toronto | Mississauga | Ontario | L5L1J3 | Canada |
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| Type | Date | Date Unknown |
|---|---|---|
| Release | May 31, 2023 | |
| Reset | Feb 8, 2024 | |
| Release | Jun 30, 2025 | |
| Reset | Jul 17, 2025 | |
| Release | Jul 28, 2025 | |
| Reset | Aug 15, 2025 |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| May 31, 2023 | Feb 8, 2024 | |||
| Jun 30, 2025 |
| ID | Term |
|---|---|
| D034381 | Hearing Loss |
| ID | Term |
|---|---|
| D006311 | Hearing Disorders |
| D004427 | Ear Diseases |
| D010038 | Otorhinolaryngologic Diseases |
| D012678 | Sensation Disorders |
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| ID | Term |
|---|---|
| D006310 | Hearing Aids |
| ID | Term |
|---|---|
| D000076251 | Wearable Electronic Devices |
| D055615 | Electrical Equipment and Supplies |
| D004864 | Equipment and Supplies |
| D012682 | Sensory Aids |
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|
| Unaided | Other | Participants will listen to stimuli in the environment with their hearing loss. Speech in noise performance is expected to decline and PFC oxygenation is expected to be increased in this condition. |
|
|
| Jul 17, 2025 |
| Jul 28, 2025 | Aug 15, 2025 |
| D009461 |
| Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |