Department of Communication Disorders, Sackler Faculty of Medicine, Tel-Aviv University, Israel
Hearing, Speech and Language Center, The Chaim Sheba Medical Center, Ramat Gan, Israel.
Trends Hear. 2016 Dec 6;20:2331216516681168. doi: 10.1177/2331216516681168.
The aim of the present study was to investigate the effect of ear asymmetry, order of testing, and gender on transient-evoked otoacoustic emission (TEOAE) pass rates and response levels in newborn hearing screening. The screening results of 879 newborns, of whom 387 (study group) passed screening successfully in only one ear in the first TEOAE screening, but passed screening successfully in both ears thereafter, and 492 (control group) who passed screening successfully in both ears in the first TEOAE, were retrospectively examined for pass rates and TEOAE characteristics. Results indicated a right-ear advantage, as manifested by significantly higher pass rates in the right ear (61% and 39% for right and left ears, respectively) in the study group, and in 1.75 dB greater TEOAE response amplitudes in the control group. The right-ear advantage was enhanced when the first tested ear was the right ear (76%). When the left ear was tested first, pass rates were comparable in both ears. The right-ear advantage in pass rates was similar in females versus males, but manifested in 1.5 dB higher response amplitudes in females compared with males, regardless of the tested ear and order of testing in both study and control groups. The study provides further evidence for the functional lateralization of the auditory system at the cochlear level already apparent soon after birth in both males and females. While order of testing plays a significant role in the asymmetry in pass rates, the innate right-ear advantage seems to be a more dominant contributor.
本研究旨在探讨耳间不对称、测试顺序和性别对新生儿听力筛查中瞬态诱发耳声发射（TEOAE）通过率和反应水平的影响。对 879 名新生儿的筛查结果进行了回顾性检查，其中 387 名（研究组）在首次 TEOAE 筛查中仅有一只耳朵通过筛查，但随后两只耳朵均通过筛查，492 名（对照组）在首次 TEOAE 筛查中两只耳朵均通过筛查。检查了通过率和 TEOAE 特征。结果表明存在右耳优势，表现为研究组右耳的通过率明显较高（右耳为 61%，左耳为 39%），且对照组的 TEOAE 反应幅度高 1.75dB。当首先测试的耳朵是右耳时，右耳优势增强（76%）。当首先测试左耳时，两只耳朵的通过率相当。右耳优势在女性和男性中的通过率相似，但无论在研究组还是对照组中，女性的反应幅度均比男性高 1.5dB，而与测试耳和测试顺序无关。本研究进一步证明了听觉系统在出生后不久就在耳蜗水平上存在功能偏侧性，且这种偏侧性在男性和女性中均存在。虽然测试顺序对通过率的不对称性有重要影响，但先天的右耳优势似乎是一个更重要的影响因素。
