Improved Speech Recognition Performance in Noise by Encoding Binaural Spatial Cues to the Cochlear Implant User.
试验速览
- 阶段
- 不适用
- 状态
- 撤回
- 主要终点
- speech reception threshold (SRT) in bilateral cochlear implant user with ITD cue
研究概览
简要总结
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.
详细描述
Listening in noisy environments is part of everyday life, it is based on binaural phenomena such as spatial localization.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Fluent in local language
- •Normal hearing listener:
- •pure tone threshold > 25dB from 125Hz to 12kHz
- •Cochlear implant recipient
- •bilaterally implanted 6 months at least, the second implant should be implanted 6 months at least before participant inclusion
- •Digisonic SP® cochlear implants user
排除标准
- •binaural sensitivity threshold < 1000µs
结局指标
主要结局
speech reception threshold (SRT) in bilateral cochlear implant user with ITD cue
时间窗: day 0
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.
次要结局
- Preferred jitter in bilateral cochlear implant user(day 0)
- speech reception threshold (SRT) in bilateral cochlear implant user without ITD cue and in normal hearing listeners(day 0)
- ITD sensitivity in bilateral cochlear implant user(day 0)
- speech reception threshold (SRT) in bilateral cochlear implant user without ITD cue and in normal hearing listeners(day 0)
- ITD sensitivity in bilateral cochlear implant user(day 0)
- Preferred jitter in bilateral cochlear implant user(day 0)