scholarly journals Septal nuclei

2018 ◽  
Author(s):  
Maxime St-Amant
Keyword(s):  
Septal Nuclei

Neural and vascular architecture of the septum pellucidum: an anatomical study and considerations for safe endoscopic septum pellucidotomy

2020 ◽  
Vol 133 (3) ◽  
pp. 902-911
Author(s):  
Laszlo Barany ◽  
Cintia Meszaros ◽  
Oliver Ganslandt ◽  
Michael Buchfelder ◽  
Peter Kurucz
Keyword(s):  
Anatomical Study ◽  
Nerve Fibers ◽  
Septum Pellucidum ◽  
Cresyl Violet ◽  
Membranous Structure ◽  
Luxol Fast Blue ◽  
Fast Blue ◽  
Frontal Horn ◽  
Septal Nuclei ◽  
Fiber Dissection

OBJECTIVEThe septum pellucidum is a bilateral thin membranous structure representing the border between the frontal horns of the lateral ventricles. Its most examined components are the septal veins due to their surgical importance during endoscopic septum pellucidotomy (ESP), which is a well-accepted method for surgical treatment of unilateral hydrocephalus. It is widely accepted that the septum pellucidum contains nerve fibers as well, but interestingly, no anatomical study has been addressed to its neural components before. The aim of the present study was to identify these elements as well as their relations to the septal veins and to define major landmarks within the ventricular system for neurosurgical use.METHODSNine formalin-fixed human cadaveric brains (18 septa pellucida) were involved in this study. A central block containing both septa pellucida was removed and frozen at −30°C for 2 weeks in 7 cases. The fibers of the septum pellucidum and the adjacent areas including the venous elements were dissected under magnification by using homemade wooden spatulas and microsurgical instruments. In 2 cases a histological technique was used to validate the findings of the dissections. The blocks were sliced, embedded in paraffin, cut in 7-µm-thick slices, and then stained as follows: 1) with H & E, 2) with Luxol fast blue combined with cresyl violet, and 3) with Luxol fast blue combined with Sirius red.RESULTSThe septum pellucidum and the subjacent septum verum form the medial wall of the frontal horn of the lateral ventricle. Both structures contain nerve fibers that were organized in 3 groups: 1) the precommissural fibers of the fornix; 2) the inferior fascicle; and 3) the superior fascicle of the septum pellucidum. The area directly rostral to the postcommissural column of the fornix consisted of macroscopically identifiable gray matter corresponding to the septal nuclei. The histological examinations validated the findings of the authors’ fiber dissections.CONCLUSIONSThe nerve elements of the septum pellucidum as well as the subjacent septum verum were identified with fiber dissection and verified with histology for the first time. The septal nuclei located just anterior to the fornix and the precommissural fibers of the fornix should be preserved during ESP. Considering the venous anatomy as well as the neural architecture of the septum pellucidum, the fenestration should ideally be placed above the superior edge of the fornix and preferably dorsal to the interventricular foramen.

mGlu2/3 receptors within the ventral part of the lateral septal nuclei modulate stress resilience and vulnerability in mice

2022 ◽  
pp. 147783
Author(s):  
Yan Wang ◽  
Yi Jiang ◽  
Bai-Lin Song ◽  
Hua-Wei Zou ◽  
Zi-Lin Li ◽  
...  
Keyword(s):  
Ventral Part ◽  
Stress Resilience ◽  
Septal Nuclei

The septal nuclei

1978 ◽  
Vol 37 (3) ◽  
pp. 269
Author(s):  
G. Raisman
Keyword(s):  
Septal Nuclei

Motivation-related neuronal activity in the object discrimination task in monkey septal nuclei

Hippocampus ◽  
1997 ◽  
Vol 7 (5) ◽  
pp. 536-548 ◽  
Author(s):  
Hisao Nishijo ◽  
Toshiaki Kita ◽  
Ryoi Tamura ◽  
Satoshi Eifuku ◽  
Katsutoshi Terasawa ◽  
...  
Keyword(s):  
Neuronal Activity ◽  
Discrimination Task ◽  
Object Discrimination ◽  
Septal Nuclei

An early lesion of the lateral septal nuclei produces changes in the forced swim test depending on gender

1995 ◽  
Vol 19 (8) ◽  
pp. 1277-1284 ◽  
Author(s):  
Carlos M. Contreras ◽  
Horacio Lara-Morales ◽  
Miguel Molina-Hernández ◽  
Margarita Saavedra ◽  
Gerardo Arrellín-Rosas
Keyword(s):  
Forced Swim Test ◽  
Swim Test ◽  
Forced Swim ◽  
Septal Nuclei ◽  
Early Lesion

Interferon-γ promotes cholinergic differentiation of embryonic septal nuclei and adjacent basal forebrain

Neuron ◽  
1994 ◽  
Vol 12 (5) ◽  
pp. 1149-1159 ◽  
Author(s):  
G. Miller lonakait ◽  
Rongtai Wei ◽  
Zury-Lin Sheng ◽  
Ronald P. Hart ◽  
Li Ni
Keyword(s):  
Basal Forebrain ◽  
Interferon Γ ◽  
Septal Nuclei

Differential increase in Fos immunoreactivity in hypothalamic and septal nuclei by arginine8-vasopressin and desglycinamide9-arginine8-vasopressin

Neuroscience ◽  
1999 ◽  
Vol 91 (4) ◽  
pp. 1331-1341 ◽  
Author(s):  
A.J Lança ◽  
P.H Wu ◽  
B Jung ◽  
J.-F Liu ◽  
V Ng ◽  
...  
Keyword(s):  
Septal Nuclei ◽  
Differential Increase
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