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Olfaction01:25

Olfaction

40.5K
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
40.5K
Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

10.5K
The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
10.5K
Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

13.1K
Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
The olfactory...
13.1K

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In vivo Ca2+- Imaging of Mushroom Body Neurons During Olfactory Learning in the Honey Bee
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嗅覚:蜜蜂の嗅覚誘発によるナビゲーション

Judith Reinhard1, Mandyam V Srinivasan, Shaowu Zhang

  • 1Visual Sciences, Research School of Biological Sciences, The Australian National University, GPO Box 475, Canberra, ACT 2601, Australia. reinhard@rsbs.anu.edu.au

Nature
|January 30, 2004
PubMed
まとめ

ミツバチ (アピス・メリフェラ) は,学習した匂いを用いて,食物源へ移動することができます. 馴染みのある香りを巣に導入すると,食べ物がない場合でも,特定の場所へのナビゲーションを誘発することができます.

科学分野:

  • 動物の行動 動物の行動
  • 感覚エコロジー 感覚エコロジー
  • 神経倫理学 神経倫理学とは

背景:

  • ミツバチ (アピス・メリフェラ) は,驚くべきナビゲーション能力を発揮する重要な受粉者です.
  • ナビゲーションは,視覚的,嗅覚的,味覚的ヒントを統合することに依存しています.
  • 嗅覚によるナビゲーションの理解は,ミツバチの採食戦略の解読の鍵です.

研究 の 目的:

  • 嗅覚信号だけでハチが学習したナビゲーションルートを誘発できるかどうかを調査する.
  • 匂いの記憶が,馴染みのある場所での食物報酬の欠如を覆すことができるかどうかを判断する.

主な方法:

  • ミツバチは,特定の匂いを,特定の屋外での砂糖飼料と関連付けるように訓練されました.
  • その後,訓練場所での食事なしで,香りが巣箱に導入されました.
  • これらの場所へのミツバチの訪問パターンが監視されました.

主要な成果:

  • ミツバチは,巣箱内の香りの存在によってのみ,訓練された場所を訪問するよう誘導されました.
  • この効果は,食品の報酬や香りが目的地で存在しない場合でも持続しました.
  • 馴染みのある香りは,ナビゲーションの記憶を活性化し,経路の記憶を早めた.

さらに関連する動画

Tactile Conditioning And Movement Analysis Of Antennal Sampling Strategies In Honey Bees Apis mellifera L.
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Simultaneous Long-term Recordings at Two Neuronal Processing Stages in Behaving Honeybees
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Simultaneous Long-term Recordings at Two Neuronal Processing Stages in Behaving Honeybees

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関連する実験動画

Last Updated: May 3, 2026

In vivo Ca2+- Imaging of Mushroom Body Neurons During Olfactory Learning in the Honey Bee
10:27

In vivo Ca2+- Imaging of Mushroom Body Neurons During Olfactory Learning in the Honey Bee

Published on: August 18, 2009

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Tactile Conditioning And Movement Analysis Of Antennal Sampling Strategies In Honey Bees Apis mellifera L.
10:14

Tactile Conditioning And Movement Analysis Of Antennal Sampling Strategies In Honey Bees Apis mellifera L.

Published on: December 12, 2012

10.2K
Simultaneous Long-term Recordings at Two Neuronal Processing Stages in Behaving Honeybees
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Simultaneous Long-term Recordings at Two Neuronal Processing Stages in Behaving Honeybees

Published on: July 21, 2014

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結論:

  • 嗅覚はハチのナビゲーションと記憶記憶において重要な役割を果たします.
  • 嗅覚ベースの記憶は,餌探し飛行を開始するための強力なドライバーである可能性があります.
  • この発見は,昆虫の航海を理解し,害虫対策や受粉管理に潜在的に影響を及ぼします.