Optimizing cochlear implants for better perception of speech on speech

Completed

Conditions: deafness
10019243
hearing-loss

Registration Number: NL-OMON44061

Lead Sponsor: niversitair Medisch Centrum Groningen

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Completed

Sex: Not specified

Target Recruitment: 231

Inclusion Criteria

In order to be eligible to participate in the NH group of this study, a subject must meet all of the following criteria:
- Be aged 18 years or more.
- Have no history of hearing or language disorder.
- Have no vision deficit (after correction) and be able to manipulate a mouse.
- Participants must generally in good health.
In order to be eligible to participate in the CI group of this study, a subject must meet all of the following criteria:
- Be aged 18 or more.
- Score more than 50% in the NVA speech in quiet intelligibility test (to allow good communication with the experimenter).
- Have no vision deficit (after correction) and be able to manipulate a mouse.
- All have comparable devices, or at least devices with comparable electrode-array length, whichever is the most common.
- Participants must generally be in good health, apart from hearing-impairment.

Exclusion Criteria

- For the NH group, participants who have audiometric pure-tone average threshold higher than 25 dB-HL over mid-frequencies, in the better ear (Stephens, 1996). This will be measured during the first session.
- All subjects who appear not in good health.
- All subjects who show signs of claustrophobia.

Study & Design

Study Type: Observational non invasive

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>The primary outcome will be the difference in VTL perception between two speech<br /><br>sounds on a given test. This will be measured by a variety of metrics, such as<br /><br>the JNDs, speech reception thresholds (SRTs), and percent-correct responses.<br /><br>Additionally, measures for percentage responses will be used. Verbal responses<br /><br>given by subjects will be audio recorded for offline analyses. This will only<br /><br>be obtained if they give their written consent. </p><br>

Secondary Outcome Measures