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相关概念视频

Auditory Perception01:17

Auditory Perception

357
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...
357
Hearing01:31

Hearing

52.5K
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.
52.5K
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

233
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...
233
Auditory Pathway01:15

Auditory Pathway

5.5K
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...
5.5K
The Cochlea01:13

The Cochlea

45.2K
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.
45.2K
Perception of Sound Waves01:01

Perception of Sound Waves

4.5K
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...
4.5K

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相关实验视频

Updated: Jul 15, 2025

A Method to Study Adaptation to Left-Right Reversed Audition
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Published on: October 29, 2018

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"什么"和"什么时候"的预测以相互一致的方式调节听觉处理.

Drew Cappotto1,2, Dan Luo1, Hiu Wai Lai1

  • 1Department of Neuroscience, City University of Hong Kong, Kowloon, Hong Kong SAR, China.

Frontiers in neuroscience
|October 2, 2023
PubMed
概括
此摘要是机器生成的。

大脑在共享的神经网络中整合了"什么"和"什么时候"的预测,展示了处理音乐等复杂感官信息的统一方法.

关键词:
听觉神经科学 听觉神经科学动态因果建模 动态因果建模电脑脑电图 (EEG) 是一种电脑电图.预测编码的预测编码.时间处理时间处理.

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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology

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相关实验视频

Last Updated: Jul 15, 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

6.6K
Cross-Modal Multivariate Pattern Analysis
13:51

Cross-Modal Multivariate Pattern Analysis

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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology
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科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学
  • 听觉感知是一种听觉感知.

背景情况:

  • 预测性处理对于行为至关重要,它整合了刺激内容 ("什么") 和时间 ("什么时候").
  • 现实世界的刺激,就像音乐一样,涉及到相互作用的多层次预测 (例如,音符,节奏).
  • 目前尚不清楚大脑是否将这些预测整合在一起,或者是否使用不同的神经机制.

研究的目的:

  • 调查"节拍"和"间隔"时间预测是否与"什么"预测相互作用.
  • 为了确定是否整合不同的时间预测涉及可分离的神经相关.
  • 探索将多层次预测集成到感官流中的神经基础.

主要方法:

  • 在本地 (间隔) 和全球 (节拍) 层面操纵"什么"和"什么时候"的预测.
  • 在重复检测任务中使用脑电图 (EEG) 记录神经活动.
  • 采用动态因果建模来进行有效的连接分析.

主要成果:

  • 时间预测 (节拍/间隔) 调节了对"什么"预测违规行为的反应.
  • 根据时间对"什么"预测的调制在EEG时空分布中共享.
  • 整合"什么"和"什么时候"的预测,增加了上旋和前-状网络之间的连接性.

结论:

  • 大脑在一个共享的皮层网络中整合了具有高一致性的多样性预测.
  • 这与提出基于节拍和基于记忆的预测单独机制的理论形成鲜明对比.
  • 这些发现突出了一个统一的神经基础,用于在感官处理中整合多层次预测.