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関連する概念動画

Hearing01:31

Hearing

48.1K
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.
48.1K
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

8.1K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
8.1K
Association Areas of the Cortex01:21

Association Areas of the Cortex

10.2K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
10.2K
Auditory Pathway01:15

Auditory Pathway

7.2K
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...
7.2K
Auditory Perception01:17

Auditory Perception

1.5K
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...
1.5K
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

1.3K
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...
1.3K

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関連する実験動画

Updated: May 5, 2026

Direct Visualization of the Murine Dorsal Cochlear Nucleus for Optogenetic Stimulation of the Auditory Pathway
07:58

Direct Visualization of the Murine Dorsal Cochlear Nucleus for Optogenetic Stimulation of the Auditory Pathway

Published on: January 20, 2015

8.9K

聴覚皮質の視覚的指向モジュールの誘導.

J Sharma1, A Angelucci, M Sur

  • 1Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge 02139, USA.

Nature
|April 29, 2000
PubMed
まとめ
この要約は機械生成です。

感覚皮質の神経細胞は,指向モジュールを形成する. 聴覚経路へのフェレット視覚入力を再接続することで,類似のモジュールが作成され,アフェレントの活動を実証しました.

さらに関連する動画

A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity
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A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity

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Combined Shuttle-Box Training with Electrophysiological Cortex Recording and Stimulation as a Tool to Study Perception and Learning
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Combined Shuttle-Box Training with Electrophysiological Cortex Recording and Stimulation as a Tool to Study Perception and Learning

Published on: October 22, 2015

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関連する実験動画

Last Updated: May 5, 2026

Direct Visualization of the Murine Dorsal Cochlear Nucleus for Optogenetic Stimulation of the Auditory Pathway
07:58

Direct Visualization of the Murine Dorsal Cochlear Nucleus for Optogenetic Stimulation of the Auditory Pathway

Published on: January 20, 2015

8.9K
A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity
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A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity

Published on: May 7, 2017

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Combined Shuttle-Box Training with Electrophysiological Cortex Recording and Stimulation as a Tool to Study Perception and Learning
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Combined Shuttle-Box Training with Electrophysiological Cortex Recording and Stimulation as a Tool to Study Perception and Learning

Published on: October 22, 2015

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科学分野:

  • 神経科学は神経科学である.
  • 感覚皮質の組織化
  • 皮質の可塑性について

背景:

  • 哺乳類の感覚皮質は,共通の性質を持つニューロンのモジュールを特徴としています.
  • 主要視野皮質 (V1) には,オリエンテーションモジュールとオーダーされたオリエンテーションマップがあります.

研究 の 目的:

  • 視覚的入力が非視覚的皮質のオリエンテーションモジュールを誘導できるかどうかを調査する.
  • 皮質回路とマップの形成におけるアフェレント活動の役割を理解する.

主な方法:

  • 網膜のプロジェクションは,フェレットにおける聴覚経路にリルーティングされた.
  • 再配線された聴覚皮質の視覚的に反応するニューロンを研究した.
  • タラモ皮質と水平の接続を分析した.

主要な成果:

  • 改造された聴覚皮質の視覚的に反応するニューロンは,指向モジュールを形成する.
  • ニューロンの指向調整はV1に匹敵したが,指向マップは秩序が悪かった.
  • リワイアリングされた皮質の水平接続は,中間の不均一性と周期性を示した.

結論:

  • Afferentの活動は,方向調節のためのthalamocorticalと局所的なintracorticalの接続に大きく影響を与えます.
  • 異なった活動はまた,方向図の形成に不可欠な長距離の水平接続にも影響を及ぼします.
  • 皮質回路は,変化した感覚入力に反応して,可塑性を発揮します.