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相关概念视频

Hearing01:31

Hearing

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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.
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Auditory Pathway01:15

Auditory Pathway

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

Perceiving Loudness, Pitch, and Location

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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...
182
Perception of Sound Waves01:01

Perception of Sound Waves

4.4K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
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相关实验视频

Updated: May 24, 2025

Semi-Automated Analysis of Peak Amplitude and Latency for Auditory Brainstem Response Waveforms Using R
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老龄化影响基本的审计和时间流程.

Antonio Criscuolo1, Michael Schwartze1, Leonardo Bonetti2,3,4

  • 1Department of Neuropsychology & Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, the Netherlands.

The European journal of neuroscience
|March 3, 2025
PubMed
概括
此摘要是机器生成的。

老龄化会影响听觉处理,导致语音理解困难. 老年人在处理可预测的声音序列时表现出神经反应的改变和相位对齐的减少,影响基本的时间能力.

关键词:
这是一个EEGEEGEEGEEGEEGEEGEEG.老化的老化 衰老的老化听证会 听证会 听证会波动的振荡 波动的振荡时间表 时间表

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相关实验视频

Last Updated: May 24, 2025

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科学领域:

  • 神经科学是一个神经科学.
  • 听觉神经科学 听觉神经科学
  • 认知老龄化 认知老龄化

背景情况:

  • 与年龄相关的听力和语音理解困难是常见的.
  • 老年人的电生理学数据显示神经反应发生变化,以及沿着听觉通路的相位对齐变化.
  • 目前尚不清楚与衰老相关的语音处理挑战是否源于基本的听觉和时间缺陷.

研究的目的:

  • 研究老年人如何在同时的听觉序列中编码时间规律.
  • 检查适应性神经相位对齐机制,以预测衰老中的声音发作.
  • 为了确定老年人是否有基本的听觉和时间过程受损.

主要方法:

  • 电脑电图 (EEG) 在老年人和年轻人中被记录.
  • 参与者听到1.5Hz的简单的同时音序.
  • 分析的重点是神经反应,1/F斜率,以及三角形和三角形频段的相连贯性.

主要成果:

  • 年长的成年人表现出更大的事件相关的神经反应和增加的1/F斜率.
  • 在老年人中观察到刺激频率 (1.5Hz) 的相连贯性降低.
  • 随着时间的推移,delta和theta波段的相连贯性倾斜率减少表明神经相位对齐机制发生了变化.

结论:

  • 衰老与在处理可预测的听觉序列时改变的上下调节抑制有关.
  • 持续神经阶段对应预期的声音发作的机制在衰老中受到损害.
  • 老龄化时基本的听觉定时能力的缺陷可能会影响更高阶的认知功能,需要在整个生命周期进行进一步的研究.