Mahoney T
Arch Otolaryngol. 1981 Jun;107(6):363-6. doi: 10.1001/archotol.1981.00790420037008.
Crossover artifacts occur when the probe microphone of an impedance instrument directly responds to vibratory-acoustic energy that crosses the skull from the stimulus transducer on the contralateral ear. The resulting meter deflections are subjectively similar to and may be interpreted as actual acoustic reflexes (ARs) by unsuspecting examiners. In this study, infants and young children aged 10 days to 6 years 9 months were fit with earplugs to eliminate the AR and were examined for artifact incidence and threshold. Results indicate a high rate of occurrence of the crossover artifact in the youngest subjects, when probe tones of 220 and 660 Hz were used with stimuli of 500 and 1,000 Hz. Artifact thresholds were found as low as at a 92-dB hearing level, and an inverse relationship was shown between age and artifact incidence and threshold.
当阻抗仪器的探头麦克风直接对从对侧耳朵的刺激换能器穿过颅骨的振动声能做出反应时，就会出现交叉伪迹。由此产生的仪表偏转在主观上与实际听觉反射（AR）相似，并且可能会被毫无戒心的检查人员误判为实际听觉反射。在本研究中，对10天至6岁9个月的婴幼儿佩戴耳塞以消除听觉反射，并检查伪迹发生率和阈值。结果表明，当使用220和660Hz的探测音以及500和1000Hz的刺激音时，最年幼的受试者中交叉伪迹的发生率很高。发现伪迹阈值低至92dB听力水平，并且年龄与伪迹发生率和阈值之间呈反比关系。
