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Wullimann, Mario F. ORCID logoORCID: https://orcid.org/0000-0001-9292-2851 (2017): Should we redefine the classic lateral pallium? In: Journal of Comparative Neurology, Vol. 525, No. 6: pp. 1509-1513

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The quadripartite model of the telencephalic pallium of amniotes offered by the Puelles school includes a medial, dorsal, lateral, and ventral pallium. Watson and Puelles ([2016] J. Comp. Neurol. this issue) now newly propose that the mammalian ventral pallium gives rise not only to all of the pallial amygdala but also to the olfactory cortex, which hitherto was considered to arise from the lateral pallium. Thus, the region of the lateral pallium was misidentified in the quadripartite model, as the designated histogenetic unit gives rise to the insular cortex/claustrum and should therefore be considered a most ventrolateral part of the dorsal pallium (its ventrolateral subdivision). The mesopallium of birds then is the homologue of this ventrolateral dorsal pallial part, not of the classic lateral pallium. The region designated as the ventral pallium in the initial quadripartite model should therefore be divided in the new Watson/Puelles model into a smaller ventral pallium and a lateral pallium.

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