最基本的电极的位置是否取决于电极阵列的设计,并影响术后的语音感知? 495个耳朵的回顾性分析
Rainer Linus Beck1, Antje Aschendorff, Susan Arndt
1Department of Otorhinolaryngology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Germany.
概括
在耳植入器 (CI) 手术中,直线电极阵列允许更深入地插入最基本的电极. 然而,这种更深的位置并没有显著影响语音感知结果.
科学领域:
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 神经外科 神经外科
- 生物医学工程 生物医学工程
背景情况:
- 耳植入物 (CI) 电极阵列设计影响手术放置和基本耳刺激.
- 了解电极位置和语音感知之间的关系对于优化CI结果至关重要.
研究的目的:
- 为了研究不同的耳植入物电极阵列设计如何影响最基本的电极的插入深度.
- 确定基底电极位置与术后语音感知之间的相关性.
主要方法:
- 在2013年至2018年期间接受了耳植入器的495名患者的回顾性分析.
- 评估各种电极阵列 (CochlearTM和MED-EL) 使用成像技术 (旋转断层扫描或形束计算断层扫描) 来测量耳大小和最基本的电极位置.
- 电极位置与术后语音感知得分 (单音节和数字) 的比较.
主要成果:
- 直线电极阵列,特别是较长的 (MED-EL F31.5和F28),实现了最基本的电极的明显更深的角度插入.
- 在耳形态和最基本的电极位置之间没有发现显著的相关性.
- 耳切除术的插入导致了最基本的电极的插入深度显著增加.
- 最基底电极的位置没有显著影响术后语音感知.
结论:
- 较长,直的电极阵列在耳植入体手术中促进了最基本的电极更深入地插入.
- 耳形态对最基底电极的最终位置的影响最小.
- 带的基底区域虽然对高频听力很重要,但可能不是通过电刺激通过当前CI技术来理解语音的首要决定因素.
相关概念视频
01:31Hearing
When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
01:13The Cochlea
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.
01:16Anatomy of the Ear
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...
01:15Auditory Pathway
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
01:23Design Example
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
01:21Perceiving Loudness, Pitch, and Location
The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by identifying...
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by identifying...