Hall J W, Derlacki E L
Ann Otol Rhinol Laryngol. 1986 Sep-Oct;95(5 Pt 1):525-30. doi: 10.1177/000348948609500516.
This study investigated whether conductive hearing loss reduces normal binaural hearing advantages and whether binaural hearing advantages are normal in patients who have had hearing thresholds improved by middle ear surgery. Binaural hearing was assessed at a test frequency of 500 Hz using the masking level difference and interaural time discrimination thresholds. Results indicated that binaural hearing is often poor in conductive lesion patients and that the reduction in binaural hearing is not always consistent with a simple attenuation of the acoustic signal. Poor binaural hearing sometimes occurs even when middle ear surgery has resulted in bilaterally normal hearing thresholds. Our preliminary results are consistent with the interpretation that auditory deprivation due to conductive hearing loss may result in poor binaural auditory processing.
本研究调查了传导性听力损失是否会降低正常的双耳听力优势，以及中耳手术改善听力阈值的患者双耳听力优势是否正常。使用掩蔽级差和双耳时间辨别阈值在500Hz的测试频率下评估双耳听力。结果表明，传导性病变患者的双耳听力通常较差，且双耳听力的降低并不总是与声信号的简单衰减一致。即使中耳手术已使双侧听力阈值正常，有时仍会出现双耳听力差的情况。我们的初步结果与以下解释一致，即传导性听力损失导致的听觉剥夺可能会导致双耳听觉处理能力差。
