Stephan K, Welzl-Müller K, Stiglbrunner H
Clinic for Hearing, Speech and Voice Disorders, University of Innsbruck, Austria.
Audiology. 1990;29(1):46-54. doi: 10.3109/00206099009081645.
The growth function of the contralateral stapedius reflex elicited by analog electrostimulation via cochlear implant was investigated in 9 patients and compared to reflex functions obtained for acoustic stimulation in 3 normal-hearing subjects. Sinusoidal signal bursts with the same time pattern were used for the two stimulation modes, the contraction of the middle ear muscle was monitored by sampling the compliance change in the contralateral ear. The reflex amplitudes were found to increase with increasing stimulus intensity in all individuals except in 1 with electrical stimulation. The slope of the intensity function for electrostimulation ranged between 5 and 85%/dB and in the acoustical mode between 2 and 4%/dB. In case of electrostimulation a frequency effect was observed.
对9名患者通过人工耳蜗进行模拟电刺激引发的对侧镫骨肌反射的生长功能进行了研究，并与3名听力正常受试者的声刺激反射功能进行了比较。两种刺激模式均使用具有相同时间模式的正弦信号脉冲串，通过采样对侧耳的顺应性变化来监测中耳肌肉的收缩。发现除1例接受电刺激的患者外，所有个体的反射幅度均随刺激强度增加而增大。电刺激强度函数的斜率在5%/dB至85%/dB之间，声学模式下在2%/dB至4%/dB之间。在电刺激情况下观察到频率效应。
