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Olfactory-hypoglossal connections

Becciu, Chiara Ombretta and Russo, Antonella and Borke, Rosrmary and Melis, Francesco and Caria, Marcello Alessandro and Pellitteri, Rosaria and Tavera, Claudio and Stanzani, Stefania (2003) Olfactory-hypoglossal connections. Pflügers Archiv. European Journal of Physiology, Vol. 445 (6), p. 705-715. eISSN 1432-2013. Article.

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DOI: 10.1007/s00424-002-0977-8


Natural olfactory stimulation with amyl acetate significantly modulates the electrical activity of hypoglossal neurons and the electromyographic responses of the tongue musculature. The aim of the present study was to identify and characterize, using neuroanatomical and neurophysiological approaches, the pathways involved in the transmission of the olfactory information to the hypoglossal nucleus (XIIn). The neuroanatomical findings provided the initial demonstration that olfactory information is conveyed from the olfactory bulb to the hypoglossal nucleus via the interpeduncular nucleus (IPn) by both fast disynaptic and different polysynaptic pathways. The latter, in particular, involve many of the brain structures that process olfactory information. The electrophysiological studies demonstrated that the IPn neurons respond with a variety of patterns to natural stimulation of the olfactory receptors, thus supporting the hypothesis that the IPn is a crucial relay station for the elaboration and transmission of olfactory stimuli to XIIn.

Item Type:Article
ID Code:1223
Uncontrolled Keywords:Olfactory pathways, hypoglossal nucleus, interpeduncular nucleus, tongue motility
Subjects:Area 05 - Scienze biologiche > BIO/09 Fisiologia
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze biomediche
Publisher:Springer Berlin / Heildelberg
Deposited On:18 Aug 2009 10:04

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