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相关概念视频

Hearing01:31

Hearing

52.1K
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.
52.1K
The Cochlea01:13

The Cochlea

44.8K
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.
44.8K
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

208
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...
208
Auditory Pathway01:15

Auditory Pathway

5.4K
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...
5.4K

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相关实验视频

Updated: Jun 27, 2025

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

Published on: October 29, 2018

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听觉空间处理中的与年龄相关的差异是由复杂的声学变化所揭示的.

Xing Wang1, Shuai Nie1, Yining Wen1

  • 1Department of Otolaryngology-Head and Neck Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.

Frontiers in human neuroscience
|April 29, 2024
PubMed
概括

通过声学变化复合体 (ACC) 响应测量的听觉空间处理在不同年龄组之间存在显著差异. 成人和老年人的ACC对空间变化敏感,而儿童则表现出发育波形差异化.

关键词:
声学变化复杂的复杂的声音变化.中央审计处理中心审计处理.皮质听觉唤起潜在的潜在.与事件相关的潜在事件.声音本地化 声音本地化

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相关实验视频

Last Updated: Jun 27, 2025

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07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

6.5K
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Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities
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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
  • 发育神经科学的发展神经科学.

背景情况:

  • 听觉空间处理能力在整个生命周期中经历了重大变化,在童年时成熟,在老年成人时下降.
  • 皮质听觉唤起潜力 (CAEP) 和声学变化复合体 (ACC) 反应是评估听觉处理的关键电生理学措施.
  • 了解这些反应的年龄相关差异对于诊断和管理听觉处理障碍至关重要.

研究的目的:

  • 为了比较儿童,成人和老年人的发病CAEP和位置引起的ACC反应.
  • 调查衰老和发育对ACC反应特征的影响,包括延迟和幅度.
  • 确定ACC对不同年龄组空间位置变化的反应的预测能力.

主要方法:

  • 招募了117名参与者:57名儿童,30名成年人和30名老年人.
  • 记录了对白噪声的开始CAEP和对连续的亚齐木斯变化的ACC.
  • 使用ANOVA,皮尔森相关性和多重线性回归分析了延迟和振幅.

主要成果:

  • 成年人中的ACC N1'-P2'幅度和延迟,以及老年人的N1'延迟,是空间位置变化的显著预测因素.
  • 与成年人相比,老年人显示N1'-P2'和P2'幅度下降.
  • 儿童在ACC反应中表现出发育性变化,并逐渐分化为P1'-N1'-P2'复合体.

结论:

  • 位置唤起的ACC反应显示出与年龄相关的不同模式,特定组件在成年人和老年人中最具信息性.
  • 儿童的波形差异化表明,听觉空间处理正在不断成熟.
  • 需要进一步研究将ACC与行为评估整合起来,以将客观的电生理学发现与整个生命周期的主观空间表现联系起来.