Related Experiment Video
Updated: Aug 18, 2026

Ex Vivo Optogenetic Dissection of Fear Circuits in Brain Slices
Published on: April 5, 2016
[Paleoamygdala: cytoarchitectonics, organization and cytological characteristics of neurons]
Abstract:
This investigation was aimed at the comparative analysis of cytoarchitectonics, neuronal organization and cytological peculiarities of dorsomedial, posterior medial and posterior cortical nuclei of rat amygdala. The series of brain frontal sections stained with cresyl violet and impregnated with silver nitrate using Golgi method were studied. It was shown that within the territory of the nuclear complex studied, the organization of the centers of the nervous system gray matter evolved from the nuclear-type into the screen-type. This formation belongs to a sparcely-dendritic neuronal system and it contains the neuroendocrine cells. As a result, it is suggested that on the basis of its structural organization and developmental mechanisms, the nuclear complex studied comprises a unified area of amygdala, which was formed at the earliest stages of its evolution, therefore it should be named a "paleoamygdala".
More Related Videos
09:49Combined Optogenetic and Freeze-fracture Replica Immunolabeling to Examine Input-specific Arrangement of Glutamate Receptors in the Mouse Amygdala
Published on: April 15, 2016
09:39Successful In vivo Calcium Imaging with a Head-Mount Miniaturized Microscope in the Amygdala of Freely Behaving Mouse
Published on: August 26, 2020
Related Concept Videos
Functional Brain Systems: Limbic System
Role of Amygdala in Memory
One of the...
Neuron Structure
Structure and Function of Neurons
The neuronal cell body—the soma— houses the nucleus and organelles vital to cellular...
Neuron Structure
Diencephalon: Anatomical Regions
Nervous Tissue: Neuron Types
Structurally, neurons are categorized into three main types: multipolar, bipolar, and unipolar (or pseudounipolar). Multipolar neurons, which are the most common type in the brain and spinal cord, as well as all motor neurons, possess multiple dendrites and a single axon.
Bipolar neurons, on the other hand, have one primary dendrite and one axon. They are...