Longitudinal Hippocampus
Longitudinal Hippocampus - Related Videos
02:36
Longitudinal Two-Photon Imaging of Fluorescently Labeled Neurons in a Live Mouse Hippocampus
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2025
Source: Ulivi, A. F., et. al. Longitudinal Two-Photon Imaging of Dorsal Hippocampal CA1 in Live Mice. J. Vis. Exp. (2019) This video demonstrates longitudinal two-photon imaging of fluorescently-labeled pyramidal neurons in a live mouse, showcasing the preparation, cannula alignment, and imaging of dendrites and dendritic spines to study neuronal structure in the hippocampal CA1 region.
02:20
Longitudinal Research
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2020
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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.
FAQs
Regional gradients allow researchers to ask whether changes in hippocampal connectivity or activity correspond to different cognitive and behavioral contributions. Rather than treating the formation as uniform, this approach compares locations along the anterior-posterior axis and examines how local circuits cooperate across regions. This supports more precise links between anatomy and function.
The axis provides an organizing framework for relating position within the hippocampal formation to variation in connectivity, neural activity, and functional contribution. Studying this dimension can reveal that memory, spatial processing, and emotional behavior are associated with distributed regional patterns rather than a single undifferentiated system. It therefore helps structure anatomical and functional comparisons.
Examining connected circuits shows how regional activity may be coordinated across the hippocampal formation. Researchers can use this perspective to investigate whether local processing remains regionally specialized while contributing to broader functions such as memory or spatial processing. The resulting circuit-level view complements analyses focused on individual neurons, locations, or behavioral outcomes.
A study can combine anatomical mapping with electrophysiology, imaging, or lesion-based approaches, depending on the question. Anatomical methods characterize organization and connections, while electrophysiology and imaging examine activity. Lesion-based work evaluates functional consequences after disrupting regions. Using these approaches together helps relate structure, neural signals, and behavioral or cognitive effects.
Researchers compare regional anatomy, connectivity, and activity across positions on the anterior-posterior axis, then relate those measurements to cognitive or behavioral functions. Electrophysiology and imaging provide activity-related evidence, whereas anatomical mapping identifies structural organization. Lesion-based findings can add evidence about functional contribution, helping distinguish regional associations from consequences of disruption.
The longitudinal framework lets investigators track whether regional organization, connectivity, or activity changes across development or in brain disorders. It can also guide comparisons between intact and disrupted systems using imaging, anatomical mapping, electrophysiology, or lesions. This regional perspective may clarify how altered hippocampal structure relates to changes in memory, spatial processing, or emotional behavior.