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Related Concept Videos

Olfaction01:25

Olfaction

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...

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Related Experiment Video

Updated: May 19, 2026

Perforated Patch-clamp Recording of Mouse Olfactory Sensory Neurons in Intact Neuroepithelium: Functional Analysis of Neurons Expressing an Identified Odorant Receptor
10:16

Perforated Patch-clamp Recording of Mouse Olfactory Sensory Neurons in Intact Neuroepithelium: Functional Analysis of Neurons Expressing an Identified Odorant Receptor

Published on: July 13, 2015

Uncoupling stimulus specificity and glomerular position in the mouse olfactory system.

Jingji Zhang1, Guangzhe Huang, Adam Dewan

  • 1Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA.

Molecular and Cellular Neurosciences
|August 29, 2012
PubMed
Summary
This summary is machine-generated.

The olfactory system maps chemical information, but its systematic organization is debated. This study found that odorant receptor functions do not dictate sensory input mapping to olfactory bulb glomeruli, regardless of stimulus specificity.

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Whole Mount Labeling of Cilia in the Main Olfactory System of Mice
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Whole Mount Labeling of Cilia in the Main Olfactory System of Mice

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Last Updated: May 19, 2026

Perforated Patch-clamp Recording of Mouse Olfactory Sensory Neurons in Intact Neuroepithelium: Functional Analysis of Neurons Expressing an Identified Odorant Receptor
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Perforated Patch-clamp Recording of Mouse Olfactory Sensory Neurons in Intact Neuroepithelium: Functional Analysis of Neurons Expressing an Identified Odorant Receptor

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Whole Mount Labeling of Cilia in the Main Olfactory System of Mice
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Whole Mount Labeling of Cilia in the Main Olfactory System of Mice

Published on: December 27, 2014

Area of Science:

  • Neuroscience
  • Olfactory System Research
  • Sensory Mapping

Background:

  • The brain systematically maps sensory information, with similar stimuli activating neighboring neurons.
  • The olfactory system uses spatial and temporal patterns in the olfactory bulb for chemical information processing.
  • The systematic mapping of chemical features in the glomerular array remains a subject of debate.

Purpose of the Study:

  • To investigate if the dual roles of odorant receptors (axon guidance and odor detection) create a functional map in the olfactory system.
  • To determine if olfactory sensory neuron response specificity correlates with glomerular position.

Main Methods:

  • Comparison of response specificity and glomerular position in genetically defined olfactory sensory neurons.
  • Utilizing variant odorant receptors to analyze mapping mechanisms.

Main Results:

  • Sensory neurons with identical odor response profiles were found in different olfactory bulb regions.
  • Neurons with distinct response profiles could map to the same glomeruli.
  • The dual functions of odorant receptors were demonstrated to be uncoupled.

Conclusions:

  • Olfactory sensory input mapping to glomeruli occurs independently of stimulus specificity.
  • The mechanisms governing olfactory sensory input mapping do not prioritize functional or stimulus-related organization.