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Updated: Jun 6, 2025

A Free-breathing fMRI Method to Study Human Olfactory Function
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A Free-breathing fMRI Method to Study Human Olfactory Function

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基于磁共振成像和嗅觉功能的嗅觉灯泡的规范参数

Minju Kim1,2, Ji Ye Lee3,4, Yong Hwy Kim5

  • 1Department of Otorhinolaryngology-Head and Neck Surgery, National Medical Center, Seoul, Korea.

Journal of Korean medical science
|November 26, 2024
PubMed
概括

嗅觉功能障碍随着年龄的增长而恶化. 这项研究发现老年人嗅觉球体 (OB) 体积和尺寸减少,与嗅觉功能较差相关,提供MRI参考值.

关键词:
衰老的衰老 衰老的衰老磁共振成像技术 磁共振成像技术嗅觉灯泡是一种嗅觉灯泡.嗅觉硫酸盐的使用方法闻到气味,闻到气味.时间 量 量 量 量

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Olfactory Receptors: Location and Structure

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...
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Physiology of Smell and Olfactory Pathway

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.
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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.
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