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相关概念视频

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...
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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 Perception01:17

Auditory Perception

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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...
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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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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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Perception of Sound Waves01:01

Perception of Sound Waves

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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: Mar 2, 2026

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
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在有听力损失的听众中检测空间听力变化.

Katarina C Poole1, Simon With2, Vincent Martin3

  • 1Dyson School of Design Engineering, Imperial College London, London, United Kingdom.

Hearing research
|February 28, 2026
PubMed
概括

听力障碍,年龄较大和光谱时敏感性较差会减缓在复杂环境中检测新声音的速度. 声音源的位置也会影响检测的准确性,特别是从后面发出的声音.

关键词:
变更检测检测改变的检测.听力损失 听力损失 听力损失在噪音中的听觉.心理物理学的精神物理.情境意识:情况意识.空间注意力空间注意力空间音频 空间音频

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科学领域:

  • 听觉神经科学 听觉神经科学
  • 精神声学是一种精神声学.
  • 人类的听觉感知

背景情况:

  • 每天的听力需要自动监控背景声音以检测变化.
  • 情境意识依赖于听觉变化检测,但人们对其损伤的理解很少.
  • 感觉神经听力损失在老年人中很常见,可能会影响听力监测.

研究的目的:

  • 为了研究传感神经听力损失的变化如何影响空间听力变化检测.
  • 确定听力损失特征与空间变化检测任务中的表现之间的关系.
  • 探索声源位置对听力障碍者听觉变化检测的影响.

主要方法:

  • 30名老年听力受损的听众执行了一个空间变化检测任务.
  • 听力损失的特点是听力测量值,水平变化灵敏度和光谱时间调制灵敏度.
  • 对响应时间,命中率和错误报警率进行了分析,并与听力损失因素和空间位置进行了对比.

主要成果:

  • 较差的光谱时光敏感性,较高的听力值,以及较长的年龄与较慢和不太准确的声音检测相关.
  • 对微小水平变化的敏感性不能预测检测性能.
  • 来自后面的声音来源被检测得不那么准确,并且比来自前面或侧面的声音更慢,这表明除了声学之外还有注意力影响.

结论:

  • 听力损失,年龄和空间位置显著影响监控动态听觉场景的能力.
  • 时光谱敏感性是一种潜在的临床措施,用于与助听器装配和情境意识相关的非语音听力处理.
  • 听力障碍中听觉变化检测缺陷可能涉及注意力机制,特别是在后听力领域的声音.