The Chemical Stimulus and Its Detection

Heather L. Eisthen and Kurt Schwenk

in Sensory Evolution on the Threshold

Published by University of California Press

Published in print April 2008 | ISBN: 9780520252783
Published online March 2012 | e-ISBN: 9780520934122 | DOI:
The Chemical Stimulus and Its Detection

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Tetrapods have three chemosensory organs: a gustatory organ, an olfactory organ, and a vomeronasal organ. These chemosensory organs detect sets of chemical stimuli with differing behavioral significance. This chapter discusses the properties of chemical stimuli and identifies which properties are relevant for detection and perception by chemosensory organs. It discusses volatility, solubility, and polarity, and their role in determining which chemosensory organ detects a given stimulus.

Keywords: tetrapods; chemosensory organs; gustatory organ; olfactory organ; vomeronasal organ; chemical stimuli; volatility; solubility; polarity

Chapter.  3913 words. 

Subjects: Zoology and Animal Sciences

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