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首页> 外文期刊>Audiology & neuro-otology >Interactions between Auditory and Vestibular Modalities during Stimulation with a Combined Vestibular and Cochlear Prosthesis
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Interactions between Auditory and Vestibular Modalities during Stimulation with a Combined Vestibular and Cochlear Prosthesis

机译：刺激前庭和耳蜗假体刺激期间视听和前庭方式之间的相互作用

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Background: A combined vestibular and cochlear prosthesis may restore hearing and balance to patients who have lost both. To do so, the device should activate each sensory system independently. Objectives: In this study, we quantify auditory and vestibular interactions during interleaved stimulation with a combined 16-channel cochlear and 6-channel vestibular prosthesis in human subjects with both hearing and vestibular loss. Methods: Three human subjects were implanted with a combined vestibular and cochlear implant. All subjects had severe-to-profound deafness in the implanted ear. We provided combined stimulation of the cochlear and vestibular arrays and looked for interactions between these separate inputs. Our main outcome measures were electrically evoked slow-phase eye velocities during nystagmus elicited by brief trains of biphasic pulse stimulation of the vestibular end organs with and without concurrent stimulation of the cochlea, and Likert scale assessments of perceived loudness and pitch during stimulation of the cochlea, with and without concurrent stimulation of the vestibular ampullae. Results: All subjects had no auditory sensation resulting from semicircular canal stimulation alone, and no sensation of motion or slow-phase eye movement resulting from cochlear stimulation alone. However, interleaved cochlear stimulation did produce changes in the slow-phase eye velocities elicited by electrical stimulation. Similarly, interleaved semicircular canal stimulation did elicit changes in the perceived pitch and loudness resulting from stimulation at multiple sites in the cochlea. Conclusions: There are significant interactions between different sensory modalities during stimulation with a combined vestibular and cochlear prosthesis. Such interactions present potential challenges for stimulation strategies to simultaneously restore auditory and vestibular function with such an implant.
机译：背景：组合的前庭和耳蜗假肢可以恢复对失去两者的患者的听力和平衡。为此，设备应独立激活每个感官系统。目的：在这项研究中，我们在人类受试者中的16通道耳蜗和6频道前庭假体在交错刺激期间量化听觉和前庭相互作用，具有听力和前庭损失。方法：用组合的前庭和耳蜗植入物植入三个人受试者。所有受试者在植入的耳朵中都有严重的耳聋。我们提供了耳蜗和前庭阵列的组合刺激，并寻找这些单独输入之间的相互作用。我们的主要结果措施在短暂的短期内通过短暂的Biphasic脉冲刺激引起的患前室器官的短暂列车引发的缓慢相速度，并且在刺激耳蜗刺激期间对耳蜗的同时刺激和倾斜的响度和俯仰的李克特规模评估，没有和不同时刺激前庭ampullae。结果：所有受试者单独由半圆形管刺激产生的听觉感，并且单独由耳蜗刺激引起的运动或慢相眼运动的感觉。然而，交错的耳蜗刺激确实产生了通过电刺激引发的慢相眼速的变化。类似地，交错的半圆形管刺激确实引起了在耳蜗中多个位点的刺激引起的感知间距和响度的变化。结论：刺激前庭和耳蜗假体的刺激期间不同的感觉模式之间存在显着的相互作用。这种相互作用对刺激策略同时恢复了这种植入物的潜在挑战。

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