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The Cochlea01:13

The Cochlea

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
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Anatomy of the Ear01:16

Anatomy of the Ear

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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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相关实验视频

Updated: Sep 9, 2025

Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery
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Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery

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多元组件和多频 tympanometry:耳植入耳朵和非植入耳朵之间的比较

Palani Saravanan1, Megha2, Pooja Venkatesh2

  • 1Department of Audiology, Centre for Hearing Sciences (CHS), Implantable Hearing Devices Unit (IHDU), All India Institute of Speech and Hearing (AIISH), Mysuru, India.

International journal of pediatric otorhinolaryngology
|August 28, 2025
PubMed
概括
此摘要是机器生成的。

耳植入器手术会改变中耳功能,增加硬度,并影响像电气唤起的耳反射值 (eSRT) 这样的测量. 这些变化取决于频率.

关键词:
耳植入物中耳多元组件声计多频 tympanometry 频率计量在线技术

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科学领域:

  • 听力学
  • 耳鼻喉科
  • 生物医学工程

背景情况:

  • 耳植入器手术会影响中耳的结构和功能.
  • 这可能会影响听力学测试的准确性,例如电气唤起的回反应值 (eSRT).
  • 了解这些变化对于精确的听力学评估至关重要.

研究的目的:

  • 在耳植入器 (CI) 手术后调查中耳结构和功能的改变.
  • 在植入耳朵和非植入耳朵之间比较 tympanometric 发现,包括多组件模式和频率依赖的入口变化.
  • 评估CI对中耳机械声学特性的影响.

主要方法:

  • 22名患有单侧CI的儿科参与者 (3.5至7岁) 接受了耳计评估.
  • 使用多频 tympanometry (226 Hz, 678 Hz, 1000 Hz 和 250-2000 Hz 扫描) 来测量输入,感应和导电.
  • 分类了多组件耳图,并比较了植入耳朵和对侧耳朵之间的频率依赖变化 (ΔY, ΔB, ΔG, Δθ).

主要成果:

  • 与非植入耳朵相比,植入耳朵的静电容量显著降低,共振频率增加 (p < 0. 05).
  • 在植入耳朵 (22. 7%) 中,3B1G耳图形的频率低于非植入耳朵 (50%) 的频率.
  • 在植入耳朵中观察到显著的吸收,吸收,导电和相角的频率依赖性下降 (p < 0. 05).

结论:

  • 耳植入手术导致植入耳朵中耳机械声学性质的变化.
  • 这些变化表明CI手术后中耳硬度增加.
  • 观察到的变化可能会影响eSRT等参数的临床测量.