Olfactory trigone

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Brain: Olfactory trigone
Scheme of rhinencephalon. (Olfactory trigone not labeled, but region is visible at bottom left, between anterior perforated substance and olfactory tract.)
Human brainstem anterior view 2 description.JPG
Human brainstem anterior view. (Olfactory trigone is #4, at upper right)
Latin trigonum olfactorium
Gray's p.827
NeuroNames hier-15
NeuroLex ID birnlex_4042

The olfactory trigone is a small triangular area in front of the anterior perforated substance.

Its apex, directed forward, occupies the posterior part of the olfactory sulcus, and is brought into view by throwing back the olfactory tract.

It is part of the olfactory pathway.[1]


  1. ^ Samudralwar DL, Diprete CC, Ni BF, Ehmann WD, Markesbery WR (June 1995). "Elemental imbalances in the olfactory pathway in Alzheimer's disease". J. Neurol. Sci. 130 (2): 139–45. doi:10.1016/0022-510X(95)00018-W. PMID 8586977. 

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This article incorporates text from a public domain edition of Gray's Anatomy.