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相关概念视频

Olfaction01:25

Olfaction

47.7K
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...
47.7K
Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

11.7K
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...
11.7K
Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

10.9K
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...
10.9K

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相关实验视频

Updated: Dec 14, 2025

Electroantennography-based Bio-hybrid Odor-detecting Drone using Silkmoth Antennae for Odor Source Localization
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使用微型电子鼻子进行高速气味传感.

Nik Dennler1,2, Damien Drix1, Tom P A Warner3,4

  • 1Biocomputation Group, University of Hertfordshire, Hatfield AL10 9AB, UK.

Science advances
|November 6, 2024
PubMed
概括

研究人员开发了一种微型,高速的电子鼻子,与动物的快速嗅觉能力相匹配. 这一突破使机器人能够实时进行各种应用的气味分析.

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Using Insect Electroantennogram Sensors on Autonomous Robots for Olfactory Searches
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Last Updated: Dec 14, 2025

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科学领域:

  • 机器人技术 机器人技术 机器人技术
  • 生物仿真工程 生物仿真工程
  • 传感器技术 传感器技术

背景情况:

  • 动物在几毫秒内拥有快速的嗅觉识别能力.
  • 当前的人工嗅觉系统是缓慢的,重的或耗电密集的,限制了机器人应用.
  • 人们需要小型化,高速的电子鼻子.

研究的目的:

  • 为了引入一个小型的,高速的电子鼻子系统.
  • 为了实现与机器人系统中的动物嗅觉相当的时间分辨率.
  • 为了实现移动机器人的实时气味分析.

主要方法:

  • 开发了一种微型电子鼻子,具有高带宽传感器读数.
  • 实施严格控制的传感参数和先进的算法.
  • 用高保真度气味传递基准进行绩效评估的评估.

主要成果:

  • 在几十毫秒内成功分类了气味脉冲.
  • 展示时间模式编码的刺激切换到60赫兹.
  • 在小型化的低功耗环境中实现了前所未有的性能,超过了小鼠的嗅觉能力.

结论:

  • 发达的电子鼻子与动物嗅觉的时间分辨率相匹配.
  • 这项技术使机器人系统中的实时气味分析成为可能.
  • 潜在的应用包括环境监测,安全和神经科学研究.