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相关概念视频

Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

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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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Olfaction01:25

Olfaction

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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.
The olfactory receptors are embedded in the cilia of the...
44.3K
Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

8.4K
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...
8.4K
Taste Buds and Receptors01:20

Taste Buds and Receptors

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Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
1.9K
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

2.9K
The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
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相关实验视频

Updated: Jun 28, 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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基于调查的主观嗅觉意识与客观嗅觉功能之间的关系.

Aurelia S Monk1, Shreyas Pyati1, Meredith Lamb1

  • 1Department of Otolaryngology/Head and Neck Surgery, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.

International forum of allergy & rhinology
|April 15, 2024
PubMed
概括
此摘要是机器生成的。

对嗅觉丧失的症状调查显示,与客观测试的结果中度一致. 为了准确诊断和监测嗅觉功能障碍,诸如气味意识量表 (OAS) 和气味情感重要性量表 (AIO) 等症状量表应与客观测量相关.

关键词:
这是一个UPSITUPSITUPSIT.嗅觉 嗅觉是一种嗅觉.嗅觉障碍 嗅觉障碍 嗅觉障碍 嗅觉障碍嗅觉测试是一种嗅觉测试.

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Olfactory Context Dependent Memory: Direct Presentation of Odorants
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相关实验视频

Last Updated: Jun 28, 2025

A Free-breathing fMRI Method to Study Human Olfactory Function
10:42

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Olfactory Context Dependent Memory: Direct Presentation of Odorants

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科学领域:

  • 耳鼻喉科 耳鼻喉科 耳鼻喉科
  • 神经科学是一个神经科学.
  • 心理物理学的精神物理.

背景情况:

  • 嗅觉功能障碍是影响生活质量的常见症状.
  • 准确评估嗅觉功能障碍对于诊断和管理至关重要.
  • 基于症状的调查被广泛使用,但它们与客观措施的相关性需要评估.

研究的目的:

  • 评估主观嗅觉感知与客观嗅觉功能之间的相关性.
  • 在客观的嗅觉测试中,评估气味意识量表 (OAS) 和气味量表的情感重要性 (AIO) 的实用性.

主要方法:

  • 参与者完成了气味意识量表 (OAS) 和气味情感重要性量表 (AIO).
  • 使用宾夕法尼亚大学气味识别测试 (UPSIT) 评估了目标嗅觉功能.
  • 在调查得分和UPSIT结果之间进行了相关性分析.

主要成果:

  • 在基于症状的调查和客观的嗅觉测试之间观察到一个可变的相关性.
  • 气味意识量表 (OAS) 与UPSIT成绩有显著的正相关性.
  • 气味尺度的情感重要性 (AIO) 也显示出与UPSIT分数的显著,中等的正相关性.

结论:

  • 虽然症状调查可以提供有价值的见解,但它们与客观嗅觉测试的相关性是中等的.
  • 为了准确诊断和有效监测嗅觉功能障碍的症状,建议将主观报告与客观测试相结合.
  • OAS和AIO尺度显示出作为评估嗅觉意识和临床实践中的重要性的补充工具的潜力.