Zhang K Y, Wenzel G I, Balster S, Lim H H, Lubatschowski H, Lenarz T, Ertmer W, Reuter G
Laser Center Hannover, Hollerithallee 8, 30419 Hannover, Germany.
Opt Express. 2009 Dec 7;17(25):23037-43. doi: 10.1364/OE.17.023037.
An acoustic transient can be generated inside an absorbing tissue as a result of laser-tissue interaction after pulsed laser irradiation. Herein we report a novel application of this physical process, the optoacoustic wave generation in the inner ear and subsequently the induction of basilar membrane vibrations. These laser induced vibrations show a direct correlation to the laser energy and an indirect correlation to the distance from the irradiation focus. Through these characteristics they may be used, in a new generation of cochlear implants, to improve the frequency specific cochlear activation and consequently improve speech perception in hearing impaired patients with residual hearing.
在脉冲激光照射后，由于激光与组织的相互作用，吸收性组织内部可产生声学瞬变。在此，我们报告了这一物理过程的一种新应用，即内耳中光声波的产生以及随后基底膜振动的诱导。这些激光诱导的振动与激光能量呈直接相关，与距照射焦点的距离呈间接相关。基于这些特性，它们可用于新一代人工耳蜗，以改善特定频率的耳蜗激活，从而提高有残余听力的听力受损患者的言语感知能力。
