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Anatomy of the hippocampus
The hippocampus is the main structure of the hippocampal formation, which is composed of two gyri (brain folds) and the subiculum. The two gyri, the dentate gyrus and Ammon's horn (cornu ammonis), form interlocking connections with one another. The dentate gyrus is folded and nestled within the hippocampal sulcus (brain indentation).
Neurogenesis (new neuron formation) in the adult brain occurs in the dentate gyrus, which receives input from other brain areas and aids in new memory formation, learning, and spacial memory.
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Divisions of the brain
- Forebrain - encompasses the cerebral cortex and brain lobes.
- Midbrain - connects the forebrain to the hindbrain.
- Hindbrain - regulates autonomic functions and coordinates movement.
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Functions of the hippocampus
The hippocampus is involved in several functions of the body including:
- Consolidation of New Memories
- Emotional Responses
- Navigation
- Spatial Orientation.
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The hippocampus: an overview
- The hippocampus is the part of the brain that is involved in forming, organizing, and storing memories. It is a limbic system structure that is particularly important in forming new memories and connecting emotions and senses, such as smell and sound, to memories.
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Passionate tv nerd and lifelong web junkie. I love sleeping. Sleeping is a science and I study it.
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The Reason For Neuroplasticity: Neuron Cells
While neuroplasticity is the ability of the brain to form fresh connections and to rewire itself, neurogenesis is the brain’s ability to grow new neurons.
Experiments in the 1960s discovered that traumatic events, stress and anxiety are detrimental to the n...
What is neurogenesis?
When new neurons are born from stem cells within the brain, which can then form new circuits. Neurogenesis surprisingly only happens in a few areas in the brain. One area is the hippocampus which needs a lot of new neurons because it encodes
The connection between walking and thinking
- Walking changes our chemistry. The heart pumps faster, circulating more blood and oxygen to all the organs and the brain.
- Walking promotes new connections between brain cells and increases the volume of the hippocampus (a brain region essential fo...
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