Fetterman Bruce L, Domico Elizabeth H
Shea Ear Clinic, Memphis, Tennessee, USA.
Otolaryngol Head Neck Surg. 2002 Mar;126(3):257-63. doi: 10.1067/mhn.2002.123044.
The performances of adult patients using Spectral peak (Nucleus 22 or Nucleus 24 patients) or Continuous Interleaved Sampling or Advanced Combination Encoder (Clarion patients) were evaluated in their ability to perform in quiet and in 2 levels of background noise.
Ninety-six patients were tested with the City University of New York Sentences presented at 70 dB in quiet and at signal-to-noise ratios (SNR) of +10 and +5 dB. Patients were scored on the number of words perceived correctly.
Scores were different at each condition (P < 0.05): 88% words correct in quiet, 73% correct at an SNR of +10 dB, and 47% correct at an SNR of +5 dB. Linear regression analysis found no significant correlation between test score and age at implantation or time using the implant. A weak negative correlation was found between years of hearing loss and score.
Competing noise interferes with comprehension of connected speech for most cochlear implant patients.
评估成年患者使用频谱峰值（Nucleus 22或Nucleus 24患者）或连续交错采样或高级组合编码器（Clarion患者）在安静环境以及两种背景噪声水平下的表现能力。
96名患者接受了测试，测试内容为纽约城市大学句子，在安静环境下以70分贝呈现，以及在信噪比（SNR）为+10分贝和+5分贝的情况下呈现。根据正确感知的单词数量对患者进行评分。
每种情况下的得分均不同（P < 0.05）：安静环境下88%的单词正确，信噪比为+10分贝时73%正确，信噪比为+5分贝时47%正确。线性回归分析发现，测试得分与植入时年龄或使用植入物的时间之间无显著相关性。听力损失年限与得分之间存在微弱的负相关。
对于大多数人工耳蜗患者而言，竞争性噪声会干扰对连贯言语的理解。
