较差听力耳中残余的低至中频听力与单侧耳聋中更好的声音定位相关。
Residual Low-to-Mid Frequency Hearing in the Poorer-Hearing Ear Is Associated with Better Sound Localization in Single-Sided Deafness.
文献信息
| PMID | 42867351 |
|---|---|
| 原文 | 在 PubMed 查看原文 ↗ |
| 发表日期 | 2026 |
| 作者 | Seung-Ik Jeon |
| 作者单位 | Laboratory of Hearing, Balance and Integrated Neuroscience (HBIN), Hallym University College of Medicine, Anyang, Republic of Korea. |
| 期刊 | The journal of international advanced otology |
| SCI 分区 | Q3 |
| IF | 1.3 |
| 研究类型 | 临床研究 · 临床 |
| 所属专科 | 耳科 |
中文摘要
背景： 单侧耳聋（SSD）因双耳线索丧失而损害空间听觉。然而，一些SSD个体表现出出乎意料的准确定位，提示存在代偿机制。本研究探讨较差听力耳中的残余听力是否与定位能力相关，以及这种关系是否在不同频段间存在差异。
方法： 14名SSD患者参与了使用宽带（BB）、低通（LP）和高通（HP）滤波噪声刺激的声音定位任务。在7个频段测量残余听力阈值（125-20 000 Hz），并分析其与定位表现的关系。还评估了临床变量（SSD的病程和发病年龄）。
结果： 仅在BB条件下、且仅在较差听力耳中观察到定位表现与残余听力之间的显著相关性。最强的关联出现在低至中频段（直至约4000 Hz），并且在控制临床变量和同一耳的高频听力后仍保持显著。未发现与HP或LP滤波刺激的显著关联。经多重比较校正后，SSD的发病年龄和病程均与定位表现无显著关联。对于呈现在较好听力侧的刺激，定位也更准确，这种不对称性仅在包含高频能量的刺激中达到显著。
结论： 当刺激包含丰富的空间线索（如宽带噪声）时，SSD患者较差听力耳中保留的低至中频听力与更好的定位相关。这些发现强调了频率特异性残余听力，尤其是低至中频，对该人群空间听觉的相关性。
英文摘要
BACKGROUND: Single-sided deafness (SSD) impairs spatial hearing because of the loss of binaural cues. However, some individuals with SSD show unexpectedly accurate localization, suggesting compensatory mechanisms. This study investigated whether residual hearing in the poorer-hearing ear is related to localization ability and whether this relationship varies across frequency bands.
METHODS: Fourteen SSD patients participated in a sound localization task using broadband (BB), low-pass (LP), and high-pass (HP) filtered noise stimuli. Residual hearing thresholds (125-20 000 Hz) were measured across 7 frequency bands, and their associations with localization performance were analyzed. Clinical variables (duration and onset age of SSD) were also assessed.
RESULTS: Significant correlations between localization performance and residual hearing were observed only under BB conditions and only in the poorer-hearing ear. The strongest associations emerged in low-to-mid frequency bands (up to approximately 4000 Hz) and remained significant after controlling for clinical variables and for high-frequency hearing in the same ear. No significant associations were found with HP- or LP-filtered stimuli. Neither onset age nor duration of SSD was significantly associated with localization performance after correction for multiple comparisons. Localization was also more accurate for stimuli presented on the better-hearing side, an asymmetry that reached significance only for stimuli containing high-frequency energy.
CONCLUSION: Preserved low-to-mid frequency hearing in the poorer-hearing ear was associated with better localization in patients with SSD when the stimulus contained rich spatial cues, such as broadband noise. These findings highlight the relevance of frequency-specific residual hearing, particularly at low-to-mid frequencies, to spatial hearing in this population.