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Language Development01:22

Language Development

375
Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
375
Brain Waves01:23

Brain Waves

1.5K
Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:
1.5K
Hearing01:31

Hearing

52.4K
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.
52.4K
The Cochlea01:13

The Cochlea

45.1K
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.
45.1K
Higher Mental Functions of the Brain: Language01:10

Higher Mental Functions of the Brain: Language

884
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
884
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

218
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...
218

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相关实验视频

Updated: Jul 11, 2025

Infant Auditory Processing and Event-related Brain Oscillations
06:34

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

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在出生时的神经振荡和语音处理.

Maria Clemencia Ortiz-Barajas1, Ramón Guevara2, Judit Gervain1,3

  • 1Integrative Neuroscience and Cognition Center, CNRS & Université Paris Cité, 45 rue des Saints-Pères, 75006 Paris, France.

iScience
|November 15, 2023
PubMed
概括

新生儿具有通过节奏区分语言的天生的能力,由明显的三角形和三角形神经振荡表明. 这表明,这些脑波模式对于从出生开始的早期语音处理至关重要.

关键词:
语言学的语言学.数学生物科学数学生物科学神经科学是一个神经科学.

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Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice
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相关实验视频

Last Updated: Jul 11, 2025

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Published on: July 1, 2015

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科学领域:

  • 神经科学是一个神经科学.
  • 发育神经科学的发展神经科学.
  • 语音处理 语音处理

背景情况:

  • 众所周知,神经振荡,包括三角波,三角波和低马波段,可以支持成年人的语音单元处理.
  • 这些用于语音处理的神经振荡的发育起源 - - 无论是先天的还是经验依赖的 - - 仍然是一个悬而未决的问题.

研究的目的:

  • 调查新生儿大脑中神经振荡的存在和功能,用于语言处理.
  • 通过神经振荡来确定新生儿是否可以根据节奏来区分语言.
  • 探索神经振荡在早期听觉学习和记忆中的作用.

主要方法:

  • 使用脑电图 (EEG) 记录新生儿的大脑活动.
  • 新生儿接触到具有不同节奏特性的语言.
  • 分析的重点在于在听觉刺激和休息期间的达和达频段.

主要成果:

  • 新生儿的delta和theta振荡在处理节奏上不同的语言时显示出显著的差异.
  • 与刺激前休息期相比,在刺激后期观察到更高的甲基活性.
  • 这些发现表明,在新生儿中,基于节奏的语言歧视具有先天的神经基础.

结论:

  • 神经振荡,特别是三角波和三角波段,似乎是生物赋予从出生开始处理语音节奏.
  • 新生儿表现出一种固有的能力,根据节奏线索来区分语言.
  • 有证据表明,神经刺激后效应,体现在theta活动中,在出生时就存在,这表明早期的听觉学习机制.