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関連する概念動画

Somatosensation01:33

Somatosensation

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The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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The Cochlea01:13

The Cochlea

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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.
44.5K
Auditory Perception01:17

Auditory Perception

317
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...
317
Auditory Pathway01:15

Auditory Pathway

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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...
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Equilibrium and Balance01:15

Equilibrium and Balance

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The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
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Hearing01:31

Hearing

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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.
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Updated: Jun 4, 2025

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
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聴覚 中脳 は 触覚 振動 の 感知 を 媒介 する

Erica L Huey1, Josef Turecek1, Michelle M Delisle1

  • 1Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA.

Cell
|December 19, 2024
PubMed
まとめ

哺乳類は,聴覚中脳 (LCIC) に信号を送るパチニアン体細胞を使って身体の振動を処理します. この脳の領域は 触覚と聴覚情報を統合し 周囲の振動に反応する 行動を誘導します

キーワード:
in vivo 生理学についてメカニカルトランスデュークション多感覚統合体感覚神経細胞バイブレーション

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Testing Tactile Masking between the Forearms

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A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli
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関連する実験動画

Last Updated: Jun 4, 2025

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
07:32

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Published on: September 1, 2016

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Testing Tactile Masking between the Forearms
08:05

Testing Tactile Masking between the Forearms

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A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli
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科学分野:

  • 神経科学
  • 感覚生物学
  • 聴覚神経科学

背景:

  • 哺乳類は 皮膚のメカニカル受容体や 聴覚系を通して 周囲の振動を感知します
  • パチニウスの体細胞は,高周波 (40-1,000 Hz) 振動に敏感な特殊なニューロンです.

研究 の 目的:

  • 哺乳類の脳における 機械的振動の 神経コードを調査する
  • 触覚と聴覚の情報を処理する側頭葉皮質 (LCIC) の役割を決定する.

主な方法:

  • 触覚や聴覚の刺激に反応する LCIC の神経活動の記録
  • LCICニューロンへのパチニアンと聴覚入力との収束を調査する.
  • 振動に対する行動反応の LCIC の必要性を評価する.

主要な成果:

  • LCICニューロンは,パチニアン体によって検出される高周波の機械的振動を顕著にコードします.
  • ほとんどのLCICニューロンは,パチニアンと聴覚入力に収束します.
  • LCICニューロンは 触覚と聴覚の刺激に 反応が強くなっています
  • LCICは,高周波振動に対する行動反応に不可欠です.

結論:

  • 聴覚中脳 (LCIC) はパチニアン体によって検出された環境振動を処理する上で重要な役割を果たします.
  • LCICのコンバージェント・タクティル・オーディトリー・プロセッシングは 行動を媒介する感覚情報を統合します
  • この研究は 聴覚系内の振動感覚の 新しい経路を明らかにしています