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相关概念视频

Higher Mental Functions of the Brain: Language01:10

Higher Mental Functions of the Brain: Language

3.4K
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...
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Language and Cognition01:27

Language and Cognition

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Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
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Auditory Perception01:17

Auditory Perception

1.0K
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...
1.0K
Auditory Pathway01:15

Auditory Pathway

7.0K
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...
7.0K
Hearing01:31

Hearing

56.4K
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.
56.4K
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: Jan 10, 2026

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

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解码语音生产和感知过程中的特定状态连接.

Yasamin Esmaeili, Amirhossein Khalilian-Gourtani, Orrin Devinsky

    bioRxiv : the preprint server for biology
    |November 24, 2025
    PubMed
    概括
    此摘要是机器生成的。

    支持语言的动态大脑网络使用电皮质谱 (ECoG) 解码. 功能连接分析揭示了语音感知和发声的独特网络特征,突出显示了大脑不那么活跃的区域的作用.

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    Author Spotlight: Investigating the Impact of Emotional Prosodies on Voice Recognition and Perception
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    相关实验视频

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    Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology
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    Author Spotlight: Investigating the Impact of Emotional Prosodies on Voice Recognition and Perception
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    科学领域:

    • 认知神经科学 认知神经科学
    • 系统神经科学 系统神经科学
    • 神经成像是一种神经成像.

    背景情况:

    • 了解动态大脑网络对于语言处理至关重要.
    • 使用fMRI的功能连接 (FC) 有局限性,特别是在语音生成方面.
    • 电皮质谱 (ECoG) 为研究大脑网络提供了高分辨率的替代方案.

    研究的目的:

    • 通过ECoG.研究支持语音感知和语音产生的大脑网络.
    • 在语言任务期间,从功能连接模式解码认知状态.
    • 确定活跃和不太活跃的大脑区域对认知状态的贡献.

    主要方法:

    • 在受控语音制作任务中利用了42名患者的ECoG数据.
    • 在五个认知状态中获得的神经活动:听觉,图像和阅读感知,语音产生和基线.
    • 采用线性分类器来从单试 FC (皮尔森相关性) 解码认知状态.

    主要成果:

    • 从FC模式获得的认知状态的平均解码精度为64.4%.
    • 识别了用于听觉和视觉感知以及语音生成的独特网络签名.
    • 发现神经激活最小的区域对于区分认知状态至关重要.

    结论:

    • 功能连接分析提供了超越局部神经活动的补充见解.
    • 动态的大脑网络,包括不太活跃的区域,对于语言感知和语言产生至关重要.
    • ECoG是剖析语言等复杂认知功能的神经支柱的宝贵工具.