目的:评估单侧耳聋(SSD)患者的声音定位准确性,并采用活性经皮骨传导植入物(atBCI)。
方法:前瞻性病例对照研究。
方法:三级转诊中心。
方法:10名SSD患者(使用ATBCIS)和10名对照。
方法:使用24扬声器阵列在半消声室中评估定位。刺激包括宽带噪声(BBN)和窄带噪声(NBN)。记录感知的刺激角度并与呈现的位置进行比较。使用ANOVA和Wilcoxon秩和检验进行统计分析。
方法:主要结果指标如下:1)平均角度误差(MAE)误差(°)和回归斜率,以及2)主观收益评估(言语空间素质问卷)。
结果:对于500Hz和1000kHz的宽带噪声(p<0.0001)和窄带噪声(p<0.0001),与对照组相比,SSD受试者的MAE定位和回归斜率更差。在4000Hz下,所有组之间的斜率没有统计学上的显着差异(p=0.1090)。与无辅助相比,斜率或MAE辅助没有显着差异。SSD队列中的本地化能力差异很大,有些人在独立条件下表现出一定的能力,最好在4000Hz。尽管SSQ证实了空间听觉领域的特殊困难,所有域都随着设备的使用而改进。
结论:SSD个体的定位能力属于某种双峰分布。有些有公平的本地化,特别是在高频,atBCI保留但未改善。其他人在任何频率下都具有最小甚至没有定位能力,没有明显的设备优势。
OBJECTIVE: Evaluate sound localization accuracy of subjects with single-sided deafness (SSD) with active transcutaneous bone conduction implants (atBCIs).
METHODS: Prospective case-control study.
METHODS: Tertiary referral center.
METHODS: Ten SSD patients (with ATBCIS) and 10 controls.
METHODS: Localization was assessed in a semianechoic chamber using a 24-speaker array. Stimuli included broadband noise (BBN) and narrowband noise (NBN). Perceived stimulus angle was recorded and compared with presented location. Statistical analyses were performed using ANOVA and Wilcoxon rank sum tests.
METHODS: The primary outcome measures were as follows: 1) mean angular error (MAE) error (°) and regression slope and 2) subjective benefit assessment (Speech Spatial Qualities questionnaire).
RESULTS: Subjects with SSD demonstrated worse localization by MAE and regression slope compared with controls for both broadband noise (p < 0.0001) and narrowband noise at 500 Hz and 1000 kHz (p < 0.0001). There was no statistically significant difference (p = 0.1090) in slope between all groups at 4000 Hz. There was no significant difference in slope or MAE aided compared with unaided. Localization ability varied widely within the SSD cohort, with some individuals showing some ability in the unaided condition, best at 4000 Hz. Although SSQ confirmed particular difficulty in the spatial hearing domain, all domains improved with device use.
CONCLUSIONS: Localization ability for individuals with SSD falls into a somewhat bimodal distribution. Some have fair localization, particularly at high frequencies, that is preserved but not improved with the atBCI. Others have minimal to no localization ability at any frequency, with no apparent device benefit.