Hypothalamic organizational concepts have greatly evolved as the primary hypothalamic pathways have been systematically investigated. In the present review, we describe how the hypothalamus arises from a molecularly heterogeneous region of the embryonic neural tube but is first differentiated as a primary neuronal cell cord (earliest mantle layer). This structure defines two axes that align onto two fundamental components: a longitudinal tractus postopticus(tpoc)/retinian component and a transverse supraoptic tract(sot)/olfactory component. We then discuss how these two axonal tracts guide the formation of all major tracts that connect the telencephalon with the hypothalamus/ventral midbrain, highlighting the existence of an early basic plan in the functional organization of the prosencephalic connectome.
CITATION STYLE
Croizier, S., Chometton, S., Fellmann, D., & Risold, P. Y. (2015, January 6). Characterization of a mammalian prosencephalic functional plan. Frontiers in Neuroanatomy. Frontiers Media S.A. https://doi.org/10.3389/fnana.2014.00161
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