Hippocampus
Hippocampus - Related Videos
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.
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.
03:18
Preparing Rhinal Cortex-Hippocampus Slices from a Rat Pup Brain
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2025
The video demonstrates a method for obtaining rhinal cortex-hippocampus slices from a rat pup's brain and culturing them in membranous inserts within a multi-well plate filled with media for further analysis.
01:19
Role of Hippocampus in Memory
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2025
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
05:00
Obtaining Various Neural Cell Populations from a Rat Hippocampus
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2025
This video demonstrates a protocol to isolate cells from rat hippocampi, including neurons, astrocytes, and microglia.
FAQs
Synaptic plasticity allows connections between neurons to strengthen or weaken as information is processed. In hippocampal circuits, these changes help distinguish incoming experiences and contribute to storing patterns that can later be reactivated. This mechanism links cellular changes at synapses with broader outcomes such as learning, memory formation, and retrieval.
The dentate gyrus and CA fields are interconnected regions that participate in processing incoming information. Their organization allows signals to pass through coordinated neural circuits rather than being handled by a single area. Studying these regions helps biologists relate circuit architecture to synaptic plasticity and to the hippocampus's contribution to learning and memory.
Hippocampal processing integrates sensory signals with contextual information, such as features that identify an experience or its setting. This combination helps the brain encode experiences in relation to one another instead of treating each signal in isolation. The resulting representations support later retrieval and contribute to recognizing locations and environmental relationships.
By integrating information about environments and the experiences that occur within them, hippocampal circuits contribute to cognitive maps. These maps represent relationships among locations, allowing spatial information to be organized for navigation. This function complements memory processing because recalling contextual details can help an organism interpret or move through a familiar environment.
Hippocampal research provides a way to examine how neural circuits supporting learning, memory, and navigation change across the lifespan. Investigators can consider both the organization of regions such as the dentate gyrus and CA fields and the synaptic plasticity underlying their function. This makes the structure relevant to studies of development and age-related cognitive change.
Because hippocampal circuits support memory and navigation, changes in their function can help researchers investigate neurological conditions that disrupt these abilities. Examining information processing, synaptic strengthening or weakening, and contextual integration can connect circuit-level changes with cognitive difficulties. Such work places affected memory or navigation within a broader biological framework rather than viewing symptoms in isolation.