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Olfactory/trigeminal interactions in nasal chemoreception.

Gérard Brand1

  • 1Laboratoire de Neurosciences, Université de Franche-Comté, Place Leclerc, 25000 Besançon, France. gerard.brand@univ-fcomte.fr <gerard.brand@univ-fcomte.fr>

Neuroscience and Biobehavioral Reviews
|March 21, 2006
PubMed
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Intranasal chemoreception involves both olfactory and trigeminal systems. Recent research explores their complex interactions, revealing how these sensory systems influence each other, though many questions remain.

Area of Science:

  • Neuroscience
  • Sensory Physiology

Background:

  • Intranasal chemoreception studies traditionally focused separately on olfactory (odor perception) and trigeminal (somatosensory, nociception) systems.
  • Odorant molecules often stimulate both olfactory and trigeminal systems simultaneously in the nasal cavity.

Purpose of the Study:

  • To investigate the complex interactions between the olfactory and trigeminal systems within the human nasal cavity.
  • To understand how these two systems coexist and influence sensory information processing.

Main Methods:

  • Neurobiology
  • Electrophysiology
  • Psychophysics
  • Functional imaging studies

Main Results:

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  • Interactions between olfactory and trigeminal systems occur at peripheral, central, and perceptual levels.
  • These interactions are complex and influence the processing of sensory information.

    • Conclusions:

    • While significant progress has been made, several structural, functional, and methodological questions regarding olfactory/trigeminal interactions remain.
    • Further research is needed to fully elucidate these complex sensory interactions.