Brain, Behavior and Evolution

Original Paper

Afferent Projections to the Ventromedial Hypothalamic Nucleus in a Lizard, Gekko gecko

Bruce L.L. · Neary T.J.

Author affiliations

Department of Biomedical Sciences, Creighton University, Omaha, Nebr., USA

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Brain Behav Evol 1995;46:14–29

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: January 08, 2008
Issue release date: 1995

Number of Print Pages: 16
Number of Figures: 0
Number of Tables: 0

ISSN: 0006-8977 (Print)
eISSN: 1421-9743 (Online)

For additional information: https://www.karger.com/BBE

Abstract

Afferent projections to the ventromedial hypothalamic nucleus (VMH) of a lizard, Gekko gecko, were studied with wheat germ agglutinin conjugated to horseradish peroxidase. Results indicated that the shell and core areas of the VMH are largely innervated by different telencephalic nuclei but similar brainstem nuclei. The common brainstem projections include the superior raphe, two isthmal populations (the ventral isthmal nucleus and parvocellular isthmal nucleus), and a dorsal thalamic projection from the posteroventral nucleus. Brainstem projections to the shell but not to the core of the VMH arise from the laterodorsal tegmental nucleus. Telencephalic projections to the VMH core originate from the ventrolateral septum, centromedial DVR, lateral amygdala, medial amygdala, interstitial amygdala, and ventral anterior amygdala. Telencephalic projections to the VMH shell come from the ventral pallidum, the anterior septal nucleus, the dorsal septal nucleus, the striatoamygdalar area, and the ventral posterior amygdala. These results, combined with connectional and topological information from other studies in amphibians, reptiles, and mammals, will be used to suggest homologies between a number of limbic areas, including several amygdalar nuclei.

© 1995 S. Karger AG, Basel




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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: January 08, 2008
Issue release date: 1995

Number of Print Pages: 16
Number of Figures: 0
Number of Tables: 0

ISSN: 0006-8977 (Print)
eISSN: 1421-9743 (Online)

For additional information: https://www.karger.com/BBE


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