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相关概念视频

Auditory Pathway01:15

Auditory Pathway

5.3K
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...
5.3K
Hearing01:31

Hearing

52.0K
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.
52.0K
Auditory Perception01:17

Auditory Perception

326
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
326
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

203
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...
203

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相关实验视频

Updated: Jun 17, 2025

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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有效的连接网络的异常预测错误处理在听觉幻觉感知.

Feifan Chen1, Mansoureh Fahimi Hnazaee2, Sven Vanneste1,3

  • 1Lab for Clinical and Integrative Neuroscience, Trinity College Institute for Neuroscience, School of Psychology, Trinity College Dublin, Dublin, Ireland.

Brain connectivity
|August 13, 2024
PubMed
概括

耳患者表现出改变的预测错误处理,对刺激变化的敏感性降低,对上下文违反的敏感性增加. 这表明,在耳病理生理学中,耳向内部状态的转变.

关键词:
有针对性的连接性.遗漏响应是对遗漏的反应.预测编码的预测编码.耳声 (tinnitus) 是一种声.

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Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
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Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea
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Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea

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相关实验视频

Last Updated: Jun 17, 2025

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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Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
11:39

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

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Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea
09:54

Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea

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科学领域:

  • 神经科学是一个神经科学.
  • 听觉感知是一种听觉感知.
  • 预测编码预测编码

背景情况:

  • 预测错误 (PE) 在预测编码框架内对感知至关重要.
  • 之前的研究表明, tinnitus 患者对 PE 的神经反应各不相同,从而产生冲突.
  • 需要对PE有细微的理解,区分刺激驱动 (sPE) 和环境驱动 (cPE).

研究的目的:

  • 要区分刺激驱动的PE (sPE) 和环境驱动的PE (cPE).
  • 研究异常的神经连接网络在处理耳患者的sPE和cPE.
  • 为了协调关于PE神经活动在耳中的相互矛盾的发现.

主要方法:

  • 招募了十名听力正常的 tinnitus 患者和健康的对照.
  • 应用了局部-全球的听觉奇怪模式.
  • 在sPE和cPE条件下测量了群体之间的脑电图 (EEG) 差异.

主要成果:

  • sPE 参与了自下而上的和自上而下的连接; cPE 主要参与了自上而下的连接.
  • 耳组对sPE的敏感性降低,对cPE的敏感性增加.
  • 听觉皮质和后带状皮质分别是对照组和耳患者中cPE的中心.
  • 耳患者在CPE期间表现出更强的连接性至副海马体和前前带皮层.

结论:

  • 这项研究剖析了刺激特征与环境在耳产生中的作用.
  • 耳患者表现出改变的预测错误处理,指向内部状态.
  • 在处理cPE时的异常连接性突出了环境在耳病理生理学中的作用.