Not provided
Not provided
Not provided
Not provided
Not provided
Delay in setting up the study.
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
The aim of the study is to evaluate the interaural time difference (ITD) benefit in patients with bilateral cochlear implants and to assess speech performance in noisy conditions compared to normal hearing listeners. Half of participants are bilateral cochlear implants users, while the other are normal hearing listeners.
Listening in noisy environments is part of everyday life, it is based on binaural phenomena such as spatial localization.
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| bilateral cochlear implant recipients | Experimental |
| |
| normal hearing listners | Active Comparator |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| S0N0 | Other | (no ITD) |
| |
| Measure | Description | Time Frame |
|---|---|---|
| speech reception threshold (SRT) in bilateral cochlear implant user with ITD cue | SRT is used as an outcome measure to quantify the acuity for speech perception in noise with Interaural Time Difference between the two ears. Signal recognition in a background noise is assessed the following conditions S0N0, S0N500, S0N1000, S-500N500 et S0Nuncorr. The noise level is constant at 65 dB SPL, the signal level is modified in the adaptive procedure in order to converge towards a score of 50% of correct response. | day 0 |
| Measure | Description | Time Frame |
|---|---|---|
| speech reception threshold (SRT) in bilateral cochlear implant user without ITD cue and in normal hearing listeners | SRT is used as an outcome measure to quantify the acuity for speech perception in noise without Interaural Time Difference between the two ears. | day 0 |
| ITD sensitivity in bilateral cochlear implant user |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Affiliation | Role |
|---|---|---|
| Nicolas Guevara, MD | Hospital University Nice-IUFC | Principal Investigator |
| Alexis Bozorg-Grayeli, MD | Hospital University Dijon-François Mitterrand | Principal Investigator |
Not provided
Not provided
| Label | URL |
|---|---|
| oticon medical website | View source |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| ID | Term |
|---|---|
| D006319 | Hearing Loss, Sensorineural |
| ID | Term |
|---|---|
| D034381 | Hearing Loss |
| D006311 | Hearing Disorders |
| D004427 | Ear Diseases |
| D010038 | Otorhinolaryngologic Diseases |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| S0N500 |
| Other |
(ITD +500µs on noise) |
|
| S-500N500 | Other | (ITD -500µs on signal and +500 µs on noise) |
|
| S0N1000 | Other | (ITD + 1000 µs on noise) |
|
| S0Nuncorr | Other | (no ITD cue, with uncorrelated stimulation frame) |
|
Speech signal and noise are presented at 65dB SPL. Participant adjusts the Interaural Time Difference between the speech signal and noise between -1000 and +1000µs. Participant moves the cursor on the interface until he/she hears a difference in sound. |
| day 0 |
| Preferred jitter in bilateral cochlear implant user | Speech signal and noise are presented at 65dB SPL. Participant adjusts the jitter of the train pulse timing from 0 to +1000µs to improve the Interaural Time Difference. | day 0 |
| D012678 |
| Sensation Disorders |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |