Human Hippocampus Anatomy
Human Hippocampus Anatomy - Related Videos
02:26
Transplantation of Human-Derived Interneuron Precursor Cells into the Mouse Pup Hippocampus
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2025
Source: Gonzalez-Ramos, A., et. al., Transplantation of Human Stem Cell-Derived GABAergic Neurons into the Early Postnatal Mouse Hippocampus to Mitigate Neurodevelopmental Disorders. J. Vis. Exp. (2022)This video demonstrates the stereotaxic injection of human-derived interneuron precursor cells into the hippocampus of a genetically modified mouse pup with reduced inhibitory interneurons, aiming to restore excitatory-inhibitory balance.
01:27
Anatomy of the Heart
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2019
The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
02:39
In Vitro Recording of Theta Oscillations in the Mouse Hippocampus
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2025
This video demonstrates the recording of rhythmic neuronal network activity, also known as theta oscillations, in an isolated hippocampus. Electrodes are inserted into various layers and spatial positions to detect and analyze theta oscillations. This shows the unique neuronal compositions and the connectivity of the neuronal network across different layers of the hippocampus.
02:03
Anatomy of the Circulatory System
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2019
The human circulatory system consists of blood, blood vessels that carry blood away from the heart, around the body, and back to the heart, and the heart itself, which acts as a central pump. The systemic circuit supplies blood to the whole body, the coronary circuit supplies blood to the heart, and the pulmonary circuit supplies blood flow between the heart and lungs. Blood travels from the right atrium to the right ventricle of the heart through the tricuspid valve, then from the right...
04:38
Preparation of Organotypic Slice Cultures from a Rat Pup's Hippocampus
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2025
This video demonstrates a method for preparing organotypic hippocampal slice cultures from the brain of a rat pup. It outlines the steps involved in the dissection of the hippocampus, slicing, and culture conditions required to promote cell viability and growth in the hippocampal slices, ultimately generating organotypic slice cultures.
FAQs
The trisynaptic pathway organizes cortical input through linked hippocampal subregions rather than through a single undifferentiated structure. The dentate gyrus, cornu ammonis fields, and subiculum participate in an interconnected circuit that processes incoming information and supports encoding and consolidation. This circuit-level view helps explain why the arrangement of subregions matters for memory and spatial cognition.
Activity-dependent synaptic plasticity allows connections in the hippocampal circuit to change as experiences are processed. Within the trisynaptic pathway, this mechanism provides a basis for encoding information rather than merely transmitting fixed signals. Its importance is that experience-related changes in connectivity can support memory formation and the consolidation of information over time.
These regions form interconnected components of a functional circuit, so examining them together preserves the relationships that shape hippocampal processing. Their combined organization helps researchers connect anatomical structure with cortical input, information encoding, spatial distinctions, and consolidation. Studying one region in isolation could therefore obscure how hippocampal pathways contribute to broader cognitive functions.
The hippocampal circuit contributes to spatial cognition by helping encode experiences and distinguish locations. Its organized connections provide a structural context for relating incoming cortical information to location-based representations. Examining the dentate gyrus, cornu ammonis fields, and subiculum as parts of that circuit can therefore clarify how anatomical organization supports spatial processing rather than memory formation alone.
An anatomical examination should distinguish the dentate gyrus, the cornu ammonis fields, and the subiculum, then consider how these elements connect within the trisynaptic pathway. Identifying the individual regions establishes the main structural components, while tracing their relationships reveals the circuit organization associated with cortical input processing, memory formation, and spatial cognition.
The hippocampus is a central research focus in these areas because its distinctive connections and vulnerability to injury make structural organization scientifically informative. Researchers can use its subregional arrangement and circuit relationships as context when examining changes associated with aging, epilepsy, or Alzheimer’s disease. This anatomy also links disease-oriented investigation to memory and spatial cognition.