Paraolfactory gyri
Gyri paraolfactorii
- Related terms: Paraolfactory gyrus
Definition
The paraolfactory gyri typically consist of two vertically-oriented gyri: the anterior and posterior gyri. However, the number of gyri can vary. These gyri can be seen on the inner surface of the frontal cortex, beneath the rostrum of the corpus callosum, in the subcallosal region. Just behind the paraolfactory gyri, the posterior paraolfactory sulcus separates them from the paraterminal gyrus, which is located right in front of the lamina terminalis. To the front, the anterior paraolfactory sulcus forms the anterior boundary for the paraolfactory gyri (or subcallosal area).
The main role of the paraolfactory gyri is to receive and process sensory information related to smell. Moreover, they are connected to other regions of the brain, such as the amygdala and hippocampus. These connections allow for the association of smells with emotions and the formation of memories.
References
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Text written by Muhammad A. Javaid, MD, PhD © 2024 IMAIOS.
Standring, S. and Gray, H. (2016). ‘Chapter 25: Cerebral Hemispheres’ in Gray’s anatomy The anatomical Basis of Clinical Practice. (41st ed.) New York: Elsevier, pp. 384 and 376.e2 (Fig 25.10).
Mark LP, Daniels DL, Naidich TP, Hendrix LE, Maas E. (1994). Anatomic moment. The septal area. AJNR Am J Neuroradiol. Feb;15(2):273-6.
