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Related Experiment Videos

Assessment of intranasal trigeminal function.

T Hummel1

  • 1Department of Otorhinolaryngology, University of Dresden, Fetscherstr. 74, 01307, Dresden, Germany. thummel@rcs.urz.tu-dresden.de

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
|April 1, 2000
PubMed
Summary

Intranasal trigeminal function significantly impacts human chemosensation, producing sensations like burning or coolness. Research uses electrophysiology and imaging to map how the brain processes these non-olfactory stimuli.

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Area of Science:

  • Neuroscience
  • Sensory Science
  • Chemosensation Research

Background:

  • Intranasal trigeminal nerve stimulation contributes significantly to human chemosensory perception.
  • Non-olfactory sensations (burning, cooling, stinging) are elicited by most odorants, aiding perception in anosmic individuals.

Purpose of the Study:

  • To investigate the role of intranasal trigeminal function in chemosensation.
  • To explore the processing and localization of trigeminally mediated sensations.
  • To understand interactions between trigeminal and olfactory pathways and modulation by external factors.

Main Methods:

  • Utilizing electrophysiological recordings to assess trigeminal stimuli at peripheral and cortical levels.
  • Employing magnetoencephalography (MEG) and functional imaging for spatial localization of trigeminal processing.

Related Experiment Videos

  • Combining neuroimaging with psychophysical measurements to analyze irritation processing and modulation.

    • Main Results:

    • Electrophysiology enables specific assessment of trigeminally mediated information.
    • MEG and functional imaging provide data on the localization of trigeminal processing.
    • Combined techniques allow detailed description of irritation processing, its interaction with olfaction, and modulation.

    Conclusions:

    • Intranasal trigeminal function is a crucial component of human chemosensory perception.
    • Neuroimaging and psychophysical methods are effective in characterizing trigeminal processing and its influences.
    • Understanding trigeminal pathways offers insights into sensory interactions and modulatory effects.