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相关概念视频

The Cochlea01:13

The Cochlea

44.5K
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.
44.5K
Hearing01:31

Hearing

51.8K
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.
51.8K
Auditory Pathway01:15

Auditory Pathway

4.6K
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...
4.6K
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

191
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...
191
Hair Cells01:22

Hair Cells

40.0K
Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
40.0K

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相关实验视频

Updated: Jun 4, 2025

Author Spotlight: Optimizing EAS with Long Electrodes for Enhanced Cochlear Coverage and Hearing Preservation
03:49

Author Spotlight: Optimizing EAS with Long Electrodes for Enhanced Cochlear Coverage and Hearing Preservation

Published on: October 11, 2024

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通过交替的耳频率分配重新学习听力.

Marc van Hoof1, Lars Lambriks2, Kiki van der Heijden2,3

  • 1Department of ENT/Audiology & School for Mental Health and NeuroScience (MHENS), Maastricht University Medical Centre, Maastricht, The Netherlands. marc.hoofvan@mumc.nl.

Scientific reports
|January 2, 2025
PubMed
概括
此摘要是机器生成的。

耳植入物使用者表现出了显著的听觉可塑性,同时通过两个频率图学习语音. 这种适应性挑战了硬连接的听觉系统的概念,在神经处理中展示了灵活性.

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A Method to Study Adaptation to Left-Right Reversed Audition
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A Method to Study Adaptation to Left-Right Reversed Audition

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Behavioral Determination of Stimulus Pair Discrimination of Auditory Acoustic and Electrical Stimuli Using a Classical Conditioning and Heart-rate Approach
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Behavioral Determination of Stimulus Pair Discrimination of Auditory Acoustic and Electrical Stimuli Using a Classical Conditioning and Heart-rate Approach

Published on: June 6, 2012

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相关实验视频

Last Updated: Jun 4, 2025

Author Spotlight: Optimizing EAS with Long Electrodes for Enhanced Cochlear Coverage and Hearing Preservation
03:49

Author Spotlight: Optimizing EAS with Long Electrodes for Enhanced Cochlear Coverage and Hearing Preservation

Published on: October 11, 2024

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A Method to Study Adaptation to Left-Right Reversed Audition
07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

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Behavioral Determination of Stimulus Pair Discrimination of Auditory Acoustic and Electrical Stimuli Using a Classical Conditioning and Heart-rate Approach
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科学领域:

  • 神经科学是一个神经科学.
  • 听力学 听力学是指听力学.
  • 生物医学工程 生物医学工程

背景情况:

  • 传统上,听觉通路被认为是以音位组织的和硬连接的.
  • 耳植入物映射声音频率-振幅信息,但大脑对这些新输入的适应尚未完全理解.
  • 在耳植入物接受者的长期声音剥夺提供了一个独特的模型来研究听觉系统的可塑性.

研究的目的:

  • 在长时间的声音剥夺后,研究耳植入体接受者的听觉可塑性.
  • 为了确定个人是否可以同时使用两个不同的交替频率图来学习语音理解.
  • 评估双地图培训对听觉学习和适应的影响.

主要方法:

  • 一项新的研究设计涉及耳植入器接受者在康复期间每天在两个不同的频率图之间切换.
  • 实验对象作为他们自己的控制,允许在实验对象内部进行审计绩效的比较.
  • 语音理解的评估是随着时间的推移使用首选和非首选频率图进行的.

主要成果:

  • 受试者通过使用两个交替的频率图表,展示了快速并发的语音理解学习.
  • 审计业绩与非偏好的 (遗留) 地图保持一致,即使在确定偏好后.
  • 试验对象继续使用他们喜欢的地图来改善语音理解,这表明学习正在进行中.
  • 从两个地图处理信息似乎没有耗尽神经资源.

结论:

  • 听觉系统的可塑性和学习灵活性高于以前的假设,即使在长时间的声音剥夺后.
  • 耳植入器接收者可以适应并从使用多个频率图中获益,挑战固定的音位组织概念.
  • 这些发现支持了响应耳植入器的听觉适应和学习的新模式.
  • 该研究的设计为临床试验提供了实际的好处,可能减少样本大小和减轻订单效应.