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Related Concept Videos

Olfaction01:25

Olfaction

44.8K
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...
44.8K
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
Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

9.1K
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...
9.1K

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Related Experiment Video

Updated: Aug 17, 2025

Controlled Odor Mimic Permeation Systems for Olfactory Training and Field Testing
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Controlled Odor Mimic Permeation Systems for Olfactory Training and Field Testing

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Study on a Flexible Odor-Releasing Device for Olfactory Training.

Huisheng Peng1, Cheng Yang1, Feitong Jian2

  • 1School of Aeronautics and Astronautics, Sun Yat-sen University, Guangzhou 510275, China.

Sensors (Basel, Switzerland)
|December 11, 2022
PubMed
Summary

A new, low-cost device was developed for olfactory training, enabling regular and quantifiable odor release. This customizable, semi-automatic system supports personalized treatment for olfactory dysfunction.

Keywords:
3D printingodor generationodorantolfactory dysfunctionolfactory trainingultrasonic atomizer

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Otorhinolaryngology

Background:

  • Olfactory training is a recognized treatment for olfactory dysfunction.
  • Existing devices lack regular and quantifiable odor release capabilities for effective olfactory training.

Purpose of the Study:

  • To develop a novel, low-cost, customizable, and semi-automatic odor-releasing device for olfactory training.
  • To provide a flexible platform for personalized olfactory dysfunction treatment.

Main Methods:

  • A controller system with 15 relays managed the device's operational logic.
  • Bluetooth module enabled examiner-participant isolation.
  • Ultrasonic atomizers generated odors from customizable scent bottles.
  • Variable fan speeds controlled odorant flow rates.

Main Results:

  • The developed device demonstrated ease of operation for both examiners and participants.
  • Customizable odorant selection and concentration control were achieved.
  • Experiments confirmed the device's potential for practical odor generation in olfactory training.

Conclusions:

  • The new odor-releasing device offers a promising, accessible solution for olfactory training.
  • Further research into improving odor generation devices is recommended for enhanced olfactory dysfunction therapy.