Parcellation of the human pretectal complex: a chemoarchitectonic reappraisal

Neuroscience
Z Borostyánkoi-Baldauf, L Herczeg

Abstract

The pretectum is composed of numerous small nuclei that control various oculomotor functions. In all the non-human mammals investigated, the different pretectal nuclei have been named uniformly according to their structural and functional homology. However, the human pretectal nuclei still bear their traditional, in most cases misleading, nomenclature.In order to reveal the presumed chemoarchitectonic similarities between human and non-human pretectal nuclei, neuropeptide Y (NPY)- and vasoactive intestinal polypeptide (VIP)-immunohistochemistry was performed in the human pretectum, after being utilised successfully for the identification of different pretectal nuclei in the cat. No VIP neurones were observed in the human pretectal area, but numerous NPY cells were found in the 'nucleus lentiformis', and in the anterior bulge of the pretectum, while the 'nucleus sublentiformis' contained an abundant NPY fibre network. Some NPY neurones were present in the 'principal pretectal nucleus' as well. The olivary pretectal nucleus possessed NPY fibres, too. In the accessory optic system, the lateral terminal nucleus contained both NPY and VIP neurones, while in the dorsal terminal nucleus only NPY neurones were found. Our chemoanatomica...Continue Reading

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Citations

Sep 3, 2010·The Cerebellum·Jan VoogdChris I De Zeeuw
Aug 27, 2016·Frontiers in Neuroanatomy·Emmanuel Márquez-LegorretaEnrique Saldaña
Sep 27, 2018·The Journal of Comparative Neurology·Alfonso DeichlerJorge Mpodozis
Apr 29, 2021·The European Journal of Neuroscience·Karina Genaro, Wiliam A Prado

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