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Published on: October 31, 2011

Functional neuroimaging of the olfactory system in humans

D H Zald1, J V Pardo

  • 1Cognitive Neuroimaging Unit, Psychiatry Service, Veterans Affairs Medical Center, 1 Veterans Drive, Minneapolis, MN 55417, USA. zald@james.psych.umn.edu

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

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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...