Benefit of Assistive Listening Device for Lateralization

Study Overview
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Brief Summary
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Speech intelligibility in noise will be evaluated in adults with moderate to moderate-severe sensorineural hearing loss using a Phonak Roger microphone and hearing aid with compatible Phonak Roger receiver. Target speech will be presented from multiple directions while competing diffuse background noise is presented simultaneously. Participants will repeat back words and percent correct is calculated.

Official Title
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Benefit of Assistive Listening Device for Lateralization and Spatial Hearing

Conditions
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Hearing Loss, Sensorineural

Intervention / Treatment
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* Device: Roger On microphone
* Device: Roger Select microphone


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Experienced hearing aid users, age 18 or older Bilateral, symmetric moderate to moderate-severe sensorineural hearing loss Good understanding of the English language Health outer ear as confirmed by otoscopy Informed consent as documented by signature Exclusion Criteria: Contraindications to the medical device noted upon otoscopy Known hypersensitivity or allergies to materials of the investigations device or comparator Inability to produce reliable test results Known psychological problems Self reported symptoms of vertigo or dizziness

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Experimental<br>All participants in the study fit with Phonak Audeo P hearing aids and compatible Phonak Roger receivers. | Device: Roger On microphone<br>* Roger On microphone transmitter which is used with Roger receivers and Audeo P hearing aids<br>Device: Roger Select microphone<br>* Roger Select microphone transmitter which is used with Roger receivers and Audeo P hearing aids<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Lateralization Hearing Ability | Participants indicate which direction (left, center, or right) target speech sentences are coming from while competing noise is also presented via four corner speakers. A higher number of correct responses indicates better lateralization ability. This will be done with two Roger microphone systems (Roger On and Roger Select) | Day 1 of 1 day study | 
| Spatial Hearing Ability | Participants repeat sentences presented from the left speaker, while ignoring overlapping competing sentences presented from the right speaker. A higher percentage of correctly repeated words indicates a better spatial hearing score. This task will be performed using two Roger microphone systems (Roger On and Roger Select) | Day 1 of 1 day study |