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相关概念视频

Olfaction01:25

Olfaction

44.2K
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...
44.2K
Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

9.1K
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...
9.1K
Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

8.2K
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...
8.2K

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相关实验视频

Updated: Jun 13, 2025

Author Spotlight: Understanding Processing of Olfactory and Spatial Information by Brain with Real-Time Behavioral Analysis
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Author Spotlight: Understanding Processing of Olfactory and Spatial Information by Brain with Real-Time Behavioral Analysis

Published on: September 20, 2024

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在空气和水中简单的嗅觉导航.

Bowei Ouyang1, Aaron C True2, John P Crimaldi2

  • 1Department of Mathematics, University of Pittsburgh, Pittsburgh, PA 15260, United States of America.

Journal of theoretical biology
|September 11, 2024
PubMed
概括

通过分析度差异和流动方向,两个算法有效地定位气味来源. 成功率超过90%,优化参数有时会导致更具探索性的路径.

关键词:
动物航行动物航行计算建模计算建模克里诺塔克西斯 (Klinotoxis) 是一个嗅觉是一种嗅觉.热带生态系统 (Tropotaxis) 是一个

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科学领域:

  • 计算生物学和化学信息学
  • 机器人技术和自主系统
  • 环境科学与工程环境科学与工程

背景情况:

  • 精确的气味源定位对于从环境监测到搜救等应用至关重要.
  • 现有的方法经常与复杂的流动动力学和不同的气味景观作斗争.
  • 开发用于气味导航的强大算法仍然是一个重大挑战.

研究的目的:

  • 评估两种用于气味来源定位的新算法的有效性.
  • 在不同的气味景观中比较算法性能,包括空气和水.
  • 确定最佳的算法参数,以最大限度地提高成功率并最大限度地减少路径长度.

主要方法:

  • 测试了双边 ("立体采样") 算法和使用模拟气味羽毛的"造"算法.
  • 作为测试环境,采用了来自气柱 (三种模式) 和水柱的图像数据.
  • 在随机位置和方向启动的代理,导航直到气味源检测或故障.

主要成果:

  • 在气味源定位方面取得了超过90%的一致成功率.
  • 路径长度大约是空中初始距离的两倍,在水中是初始距离的四倍.
  • 优化成功通常会导致更探索性的搜索路径.

结论:

  • 这两种算法都在各种环境中展示了气味源定位的高成功率.
  • 气味方向信息对于水上航行至关重要,对气泡有好处.
  • 算法参数调整会影响导航效率和搜索策略.