Assessing Listening Effort at Different Signal-to-noise Ratios in Bone-anchored Users

2020-01-30 14:40:46 | BioPortfolio


The purpose of this study is to assess listening effort during a speech-in-noise task in bone-anchored hearing systems (BAHS) users via pupillometry.


Pupil dilation can be used as an objective indicator of listening effort during the execution of a task. The aim is to compare listening effort with different settings (OpenSound Navigator ON and OFF) of Ponto 4, the sound processor released by Oticon Medical AB in June 2019, in listening scenarios that differ in complexity. The study consists of three visits of about two hours each in duration, during which the patients will perform a speech-in-noise task where the listening task varies in difficulty (i.e., in terms of signal-to-noise ratio, SNR). Pupil dilation will be recorded during the listening task as an indicator of listening effort. The patients will also use Ponto 4, instead of their own Ponto device, during a field-trial period of three months in between visit 2 and 3. Subjective evaluations of Ponto 4 will be performed via three questionnaires, one regarding self-reported performance in everyday life, one regarding work-related fatigue, and one regarding overall sound processor preference (Ponto 4 vs. patient's own device). All these outcome measures are non-invasive measurements. This is a post market study and all products used are CE marked and used in clinical practice worldwide.

Study Design


Bilateral Hearing Loss


Fitting of Ponto 4


Audiology Department, Nuffield House, University Hospitals Birmingham
West Midlands
United Kingdom
B15 2TH


Not yet recruiting


Oticon Medical

Results (where available)

View Results


Published on BioPortfolio: 2020-01-30T14:40:46-0500

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