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相关概念视频

Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

13.6K
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...
13.6K
Olfaction01:25

Olfaction

49.5K
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...
49.5K
Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

13.6K
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...
13.6K
Auditory Perception01:17

Auditory Perception

1.4K
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
1.4K
Self-Discrepancy Theory02:45

Self-Discrepancy Theory

19.0K
One influential perspective on what motivates people's behavior is detailed in Tory Higgin's self-discrepancy theory (Higgins, 1987). He proposed that people hold disagreeing internal representations of themselves that lead to different emotional states.  
19.0K
Prosopagnosia01:24

Prosopagnosia

1.0K
Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
1.0K

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相关实验视频

Updated: Mar 12, 2026

An Olfactory Preference Test for Measuring Olfactory Hedonic Biases in Mouse Models of Depression
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An Olfactory Preference Test for Measuring Olfactory Hedonic Biases in Mouse Models of Depression

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长期COVID-19嗅觉功能障碍:心理物理测试与自我感知之间的差异.

Aina Sansa1, Alda Cardesín1, Mariana Campos1

  • 1Hospital Parc Taulí, Otorhinolaryngology Department, Rhinology and Sleep Unit, Sabadell, Spain.

Brazilian journal of otorhinolaryngology
|March 10, 2026
PubMed
概括
此摘要是机器生成的。

长期COVID-19患者表现出嗅觉识别缺陷,这些缺陷在主观测试中没有得到反映. 这种嗅觉功能障碍与其他鼻子疾病不同,需要量身定制的诊断和治疗方法.

关键词:
这就是BAST-24的特点.在 COVID-19 疫情中,嗅觉功能障碍 嗅觉功能障碍生活质量生活的质量.鼻炎是一种鼻炎.

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Author Spotlight: Exploring Olfactory Influences on Corticospinal Excitability - Insights and Innovations in Neurological Research
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Author Spotlight: Exploring Olfactory Influences on Corticospinal Excitability - Insights and Innovations in Neurological Research

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Olfactory Assays for Mouse Models of Neurodegenerative Disease
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Olfactory Assays for Mouse Models of Neurodegenerative Disease

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相关实验视频

Last Updated: Mar 12, 2026

An Olfactory Preference Test for Measuring Olfactory Hedonic Biases in Mouse Models of Depression
06:27

An Olfactory Preference Test for Measuring Olfactory Hedonic Biases in Mouse Models of Depression

Published on: July 11, 2025

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Author Spotlight: Exploring Olfactory Influences on Corticospinal Excitability - Insights and Innovations in Neurological Research
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Olfactory Assays for Mouse Models of Neurodegenerative Disease
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Olfactory Assays for Mouse Models of Neurodegenerative Disease

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科学领域:

  • 耳鼻喉科 耳鼻喉科 耳鼻喉科
  • 神经学 神经学
  • 传染性疾病 传染性疾病

背景情况:

  • 嗅觉功能障碍是COVID-19的一个常见的后果.
  • 长期COVID-19患者经常报告持续的气味和味觉障碍.
  • 了解嗅觉障碍的性质对于有效管理至关重要.

研究的目的:

  • 为了比较客观的嗅觉测试结果与长期COVID-19患者的主观嗅觉感知.
  • 描述长期的COVID-19嗅觉功能障碍,并将其与具有鼻息肉 (CRSwNP) 的慢性鼻炎进行比较.
  • 为制定有针对性的诊断和治疗策略提供信息.

主要方法:

  • 一项涉及86名长期COVID-19患者的观察性研究.
  • 使用巴塞罗那嗅觉测试 (BAST-24 Plus),视觉模拟量表 (VAS) 和中鼻结局测试 (SNOT-22) 的评估.
  • 与120名健康对照和121名CRSwNP患者进行了比较.

主要成果:

  • 与对照组相比,长期COVID-19患者在气味检测和识别方面表现出显著的缺陷.
  • 长期COVID-19中的嗅觉障碍不如CRSwNP中那么严重.
  • 主观嗅觉 (VAS) 与气味识别的相关性比检测更强,但总体而言,主观感知与客观测试成绩的相关性并不好.

结论:

  • 长期COVID-19患者的主观嗅觉感知与客观心理物理测试结果不一致.
  • 长期COVID-19嗅觉功能障碍主要表现为识别障碍,与其他鼻子疾病中发现的检测主导障碍不同.
  • 长期的COVID-19嗅觉功能障碍需要特定的诊断工具和治疗策略.