The hippocampus proper is defined by the dentate gyrus and Cornu Ammonis (CA). While the dentate gyrus contains the fascia dentata and the hilus, the CA is anatomically and functionally differentiated into distinct subfields named CA1, CA2, CA3, and CA4.

The hippocampal subfields are four subfields CA1, CA2, CA3, and CA4 that make up the structure of the hippocampus. Regions described in the hippocampus are the head, body, and tail, and other hippocampal subfields include the dentate gyrus , the presubiculum , and the subiculum .

The hippocampus is divided into four subfields, named Cornu Ammonis (CA)1, CA2, CA3, and CA4, which are characterized by a single layer of densely packed pyramidal cell neuron bodies. CA1 is the first and major subfield where dendrites of pyramidal cells form a thick band and receive shuffle collateral axons of pyramidal cell of the pyramidal ...

Here, we perform circuit reconstruction of a CA3 module using three dimensional (3D) electron microscopy data and combine this with functional connectivity recordings and computational simulations to determine possible CA3 network mechanisms.

The differential effect of CA3 lesions on the contextual encoding versus contextual retrieval of fear to an extinguished CS is surprising insofar as CA1 receives a major excitatory input from CA3.

CA stands for cornu ammonis, or ram's horn, referring to the shape of this area. There are two outputs from these CA3 neurones. First, fibres leave the hippocampus via the fornix and travel to the hypothalamus, which then connects with the thalamus.

Jan 20, 2024 · CA3: The Hub of Connectivity. CA3 is a key player in the hippocampal network, serving as a major hub for information processing and memory encoding. Structural Details. Located between CA2 and CA4, CA3 contains densely packed pyramidal neurons.

Feb 5, 2015 · The CA3 region of the hippocampus: how is it? What is it for? How does it do it? Front Cell Neurosci. 2015 Feb 5:9:19. doi: 10.3389/fncel.2015.00019. eCollection 2015. 1 Department of Neuroscience, International School for Advanced Studies Trieste, Italy ; European Brain Research Institute (EBRI) Rita Levi-Montalcini Rome, Italy.

Calcium carbonate is a chemical compound with the chemical formula Ca CO 3. It is a common substance found in rocks as the minerals calcite and aragonite, most notably in chalk and limestone, eggshells, gastropod shells, shellfish skeletons and pearls. Materials containing much calcium carbonate or resembling it are described as calcareous.

Mar 2, 2017 · Computational theories have proposed specific roles in hippocampal function and memory for the sparse inputs from the dentate gyrus to CA3 and for the extended local recurrent connectivity that...