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相关概念视频

Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

8.7K
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...
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Olfaction01:25

Olfaction

44.5K
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...
44.5K
Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

9.4K
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...
9.4K

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相关实验视频

Updated: Jul 19, 2025

A Lateralized Odor Learning Model in Neonatal Rats for Dissecting Neural Circuitry Underpinning Memory Formation
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嗅觉电路功能的早期发展

Joost X Maier1, Zihao Zhang1

  • 1Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Winston-Salem, NC, United States.

Frontiers in cellular neuroscience
|August 11, 2023
PubMed
概括
此摘要是机器生成的。

新生儿动物的大脑,尽管结构不成熟,可靠地处理嗅觉信息. 嗅觉系统的这种稳定性支持了生命早期的关键行为和生存.

关键词:
抑制抑制抑制的抑制作用地方现场潜力 地方现场潜力新生儿新生儿新生儿新生儿嗅觉灯泡是一种嗅觉灯泡.振荡的振荡是如何发生的皮质皮质的皮质皮质.

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An Explant System for Time-Lapse Imaging Studies of Olfactory Circuit Assembly in Drosophila
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相关实验视频

Last Updated: Jul 19, 2025

A Lateralized Odor Learning Model in Neonatal Rats for Dissecting Neural Circuitry Underpinning Memory Formation
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科学领域:

  • 神经科学是一个神经科学.
  • 发展生物学 发展生物学
  • 感官系统 感官系统

背景情况:

  • 早期的大脑发育涉及多个层面的显著结构变化.
  • 不成熟的大脑必须执行适应性功能,尽管正在进行成熟.
  • 动物的嗅觉系统是研究盲和聋新生儿早期感官处理的一个关键模型.

研究的目的:

  • 研究结构不成熟的新生儿大脑如何处理信息.
  • 了解在发育过程中如何保持稳定和可靠的大脑功能.
  • 审查新生儿嗅觉系统的结构和功能变化.

主要方法:

  • 对嗅觉回路结构发展研究的综述.
  • 功能活动的体内电生理记录的分析.
  • 新生儿嗅觉回路中的网络级活动模式的表征.

主要成果:

  • 新生儿嗅觉处理涉及相互连接的大脑区域,如嗅球和状皮质.
  • 嗅觉回路在新生儿中表现出不同的结构成熟度.
  • 尽管有结构性变化,新生儿嗅觉系统产生稳定,动态的网络活动.

结论:

  • 新生儿嗅觉系统在结构发展过程中表现出了显著的功能稳定性.
  • 了解这些机制对于阐明未成熟大脑中的信息处理至关重要.
  • 这些发现为研究新生儿行为和感官系统的发育过渡提供了信息.