Plinkert P K, Lenarz T
Universitäts-HNO-Klinik Tübingen.
Laryngorhinootologie. 1992 Feb;71(2):74-8. doi: 10.1055/s-2007-997249.
The active vibration of the basilar membrane as well as evoked otoacoustic emissions (EOAE) are probably based on the motile properties of cochlear outer hair cells (OHC). In the present study we examined the effects of contralateral acoustic stimulation on ipsilateral EOAE and thereby the active cochlear micromechanics. Contralateral white noise with intensities below 30 dB HL enhanced the EOAE amplitude, whereas higher sound levels reduced the evoked acoustic emissions. Similar effects of contralateral acoustic stimuli on ipsilateral EOAE were observed in patients with a conductive hearing loss. However, the required sound levels were higher compared to probands with normal hearing. In controls with unilateral deaf patients white noise up to 60 dB HL did not alter the EOAE amplitude. We concluded, that in patients with normal hearing or unilateral conductive hearing loss, effects of contralateral acoustic stimulation on evoked ipsilateral sound emissions may be due to the activation of crossed olivo-cochlear efferents reaching the OHCs.
基底膜的主动振动以及诱发耳声发射（EOAE）可能基于耳蜗外毛细胞（OHC）的运动特性。在本研究中，我们研究了对侧声刺激对同侧EOAE的影响，从而研究了耳蜗的主动微力学。强度低于30 dB HL的对侧白噪声增强了EOAE幅度，而更高的声级则降低了诱发的声发射。在传导性听力损失患者中也观察到对侧声刺激对同侧EOAE有类似影响。然而，与听力正常的受试者相比，所需的声级更高。在单侧聋患者的对照组中，高达60 dB HL的白噪声不会改变EOAE幅度。我们得出结论，在听力正常或单侧传导性听力损失的患者中，对侧声刺激对诱发的同侧声发射的影响可能是由于到达OHC的交叉橄榄耳蜗传出神经的激活。
