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Anat Cell Biol

Published online October 22, 2021


Copyright © Korean Association of ANATOMISTS.

Interthalamic adhesion in humans: a gray commissure?

Jorge Eduardo Duque Parra1,2 , Álex Pava Ripoll1,2 , Juan Fernando Vélez García3

1Department of Basic Sciences, Faculty of Health Sciences, Universidad de Caldas, Manizales, 2Medicine Program, Department of Basic Sciences, Universidad de Manizales, Manizales, 3Department of Animal Health, Faculty of Veterinary Medicine and Zootechnics, Universidad del Tolima, Ibagué, Colombia

Correspondence to:Juan Fernando Vélez García
Department of Animal Health, Faculty of Veterinary Medicine and Zootechnics, Universidad del Tolima, Ibagué 730006299, Colombia
E-mail: jfvelezg@ut.edu.co

Received: August 13, 2021; Revised: September 10, 2021; Accepted: September 13, 2021

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


Interthalamic adhesion is an inconstant part of the human diencephalic neuroanatomy, which some histological studies have indicated it is a gray commissure and others a white commissure. Its presence has been associated with alterations in health status, including schizophrenia, psychotic states, and hydrocephalus. Thirty-one fresh human brains were evaluated randomly, to determine the presence of interthalamic adhesion and its histological composition, by way of lamina terminalis puncture of the third ventricle. Photographic records were taken and histological processes was performed by hematoxylin-eosin staining, in the case of the existence of the adhesion. It was found that 51.71% did present interthalamic adhesion, and on histological examination, no neuron bodies were found in the median part, which implies that does not correspond to a gray commissure, but interthalamic adhesion in humans is variable, with a predominance of glial cells. There is no gray commissure in human interthalamic adhesions.

Keywords: Anatomy, Diencephalon, Histology, Neuroanatomy, Thalamus

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