Relationship between auditory function of nonimplanted ears and bimodal benefit.
Relationship between auditory function of nonimplanted ears and bimodal benefit.
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DOI：
10.1097/aud.0b013e31826709af
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发表时间：
2013-03
期刊：
影响因子：
3.7
通讯作者：
Saoji A
中科院分区：
文献类型：
--
作者：
Zhang T;Spahr AJ;Dorman MF;Saoji A
一只耳朵植入人工耳蜗（CI），另一只耳朵佩戴助听器的患者通常在获得电刺激和声刺激信息（EAS）时获得最高的言语理解分数。在这项研究中的问题是是否在助听器的耳朵的听觉功能的措施将预测语音理解的好处时，从辅助耳朵的信息被添加到CI的信息。受试者是22名双峰听众，其中一只耳朵有CI，非植入耳朵有低频听觉。受试者被分为两组-一组有轻度到中度的低频损失，另一组有严重到严重的损失。听觉功能的测量包括（i）≤ 750 Hz时的听力阈值，（ii）言语理解评分（安静时的单词和噪声中的句子）和（iii）频谱调制检测（SMD）阈值。在SMD任务中，一个刺激是平坦频谱噪声，另一个是具有1.0峰值/倍频程的正弦调制的噪声。当声刺激和电刺激相结合时，发现所有三种听觉功能指标之间存在显着相关性，并且对言语理解有好处。受益与助听耳的听力阈值（r =-0.814）、声学言语理解（r = 0.635）和SMD阈值（r =-0.895）显著相关。然而，只有SMD阈值与轻度-中度损失组（r =-0.828）和重度-深度损失组（r =-0.896）的获益显著相关。1个周期/倍频程的SMD阈值有可能为临床医生提供与低频听力耳朵是否可能增加CI提供的语音清晰度相关的信息。
Patients with a cochlear implant (CI) in one ear and a hearing aid in the other ear commonly achieve the highest speech understanding scores when they have access to both electrically and acoustically stimulated information (EAS). At issue in this study was whether a measure of auditory function in the hearing-aided ear would predict the benefit to speech understanding when the information from the aided ear was added to the information from the CI. The subjects were 22 bimodal listeners with a CI in one ear and low-frequency acoustic hearing in the non-implanted ear. The subjects were divided into two groups -- one with mild to moderate low-frequency loss and one with severe to profound loss. Measures of auditory function included (i) audiometric thresholds at ≤ 750 Hz, (ii) speech understanding scores (words in quiet and sentences in noise), and (iii) spectral modulation detection (SMD) thresholds. In the SMD task, one stimulus was a flat spectrum noise and the other was a noise with sinusoidal modulations at 1.0 peak/octave. Significant correlations were found among all three measures of auditory function and the benefit to speech understanding when the acoustic and electric stimulation were combined. Benefit was significantly correlated with audiometric thresholds (r = −0.814), acoustic speech understanding (r = 0.635), and SMD thresholds (r = −0.895) in the hearing-aided ear. However, only the SMD threshold was significantly correlated with benefit within the group with mild-moderate loss (r = −0.828) and within the group with severe-profound loss (r = −0.896). The SMD threshold at 1 cycle/octave has the potential to provide clinicians with information relevant to the question of whether an ear with low-frequency hearing is likely to add to the intelligibility of speech provided by a CI.