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関連する概念動画

Hearing01:31

Hearing

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.
Perception of Sound Waves01:01

Perception of Sound Waves

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 frequency...
Anatomy of the Ear01:16

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
Auditory Pathway01:15

Auditory Pathway

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 the...
Auditory Perception01:17

Auditory Perception

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 cochlea, a...
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

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 identifying...

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関連する実験動画

Updated: Jun 28, 2026

Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging
10:09

Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging

Published on: September 12, 2012

掛け算によって作成された聴覚的空間的受容場.

J L Peña1, M Konishi

  • 1Division of Biology 216-76, California Institute of Technology, Pasadena, CA 91125, USA. jose@etho.caltech.edu

Science (New York, N.Y.)
|April 17, 2001
PubMed
まとめ
この要約は機械生成です。

オオカミのニューラル回路は

さらに関連する動画

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

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners
07:52

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners

Published on: March 13, 2026

関連する実験動画

Last Updated: Jun 28, 2026

Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging
10:09

Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging

Published on: September 12, 2012

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

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners
07:52

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners

Published on: March 13, 2026

科学分野:

  • 神経科学は神経科学である.
  • 計算神経科学とは
  • 監査システム 監査システム

背景:

  • 掛け算は計算モデルにおける基本的な演算であるが,生物学的なニューロンではめったに観察されない.
  • オオカミの聴覚システムは,聴覚空間をマッピングするために,音間時間差 (ITD) と音間レベル差 (ILD) を処理します.
  • このシステムのニューロンは,水平および垂直の空間座標に対応する,結合されたITDとILDの選択性を示す.

研究 の 目的:

  • オオカミの聴覚系における空間的選択性の基礎となる計算メカニズムを調査する.
  • 神経応答が,感覚インプットの掛け算または加算に基づいているかどうかを判断する.
  • 空間調整の精錬における非線形プロセスの役割を探求する.

主な方法:

  • 空間特異の神経細胞におけるサブスレッジポストシナプスポテンシャルの分析.
  • ITDとILDの組み合わせに対するニューラル応答のモデリング.
  • 非線形プロセスがピーク出力に与える影響を調査する.

主要な成果:

  • ITD-ILDペアに対するサブスリーフレスポンスは,添加的な相互作用よりも,掛け算的な相互作用によってよりよく説明されます.
  • ITDとILDに調節されたポストシナプスポテンシャルの倍数は,観察された神経活動の説明をします.
  • 追加の非線形プロセスは,スパイク出力の空間調整を強化しますが,純粋な掛け算モデルから逸脱します.

結論:

  • 神経の増殖は,計算的には一般的ですが,空間マッピングのためのフクロウの聴覚系で実証されています.
  • この発見は,生物学的ニューラル回路における掛け算計算の証拠を提供する.
  • 非線形プロセスは,単純な掛け算を超えて,空間的選択性を精錬する役割を果たします.