What is CA3 in hippocampus?
What is CA3 in hippocampus?
The CA3 system, through its recurrent collateral connections, is presented as a single attractor enabling fast, one trial, associations between any spatial location and an object or reward. A recurrent structure permits memory completion during recall from any subset of acquired links.
What are the region of hippocampus?
The hippocampus, which is located in the inner (medial) region of the temporal lobe, forms part of the limbic system, which is particularly important in regulating emotional responses.
What does CA3 stand for?
CA3
| Acronym | Definition |
|---|---|
| CA3 | Carbonic Anhydrase 3 (gene) |
What is CA1 CA2 and CA3?
CA2. CA2 is a small region located between CA1 and CA3. It receives some input from layer II of the entorhinal cortex via the perforant path. Its pyramidal cells are more like those in CA3 than those in CA1.
Where is Ca2 located in the hippocampus?
CA2 is a small region located between CA1 and CA3. It receives some input from layer II of the entorhinal cortex via the perforant path. Its pyramidal cells are more like those in CA3 than those in CA1. It is often ignored due to its small size.
How are CA1 pyramidal cells related to the hippocampus?
It is also known that extracellular stimulation of fimbria stimulates CA3 Pyramidal cells antidromically and orthodromically, but it has no impact on dentate granule cells. Each CA1 Pyramidal cell also sends an axonal branch to fimbria. Hilar mossy cells and CA3 Pyramidal cells are the main origins of hippocampal commissural fibers.
What are the subfields of the hippocampus proper?
The hippocampus proper refers to the actual structure of the hippocampus which is made up of four regions or subfields. The subfields CA1, CA2, CA3, and CA4 use the initials of Cornu Ammonis, an earlier name of the hippocampus. There are four regions in the hippocampus proper which form a neural circuit.
Where does CA3 receive input from the dentate gyrus?
CA3 receives input from the mossy fibers of the granule cells in the dentate gyrus, and also from cells in the entorhinal cortex via the perforant path. The mossy fiber pathway ends in the stratum lucidum. The perforant path passes through the stratum lacunosum and ends in the stratum moleculare.