Hippocampal Dendrites
Hippocampal Dendrites - Related Videos
10:55
Assessment of Dendritic Arborization in the Dentate Gyrus of the Hippocampal Region in Mice
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Cited by 6 •
2015
We describe two methods for visualization and quantification of dendritic arborization in the hippocampus of mouse models: real-time and extended depth of field imaging. While the former method allows sophisticated topographical tracing and quantification of the extent of branching, the latter allows speedy visualization of the dendritic tree.
14:11
Imaging Dendritic Spines of Rat Primary Hippocampal Neurons using Structured Illumination Microscopy
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Cited by 10 •
2014
This article describes a working protocol to image dendritic spines from hippocampal neurons in vitro using Structured Illumination Microscopy (SIM). Super-resolution microscopy using SIM provides image resolution significantly beyond the light diffraction limit in all three spatial dimensions, allowing the imaging of individual dendritic spines with improved detail.
09:44
Assessment of Hippocampal Dendritic Complexity in Aged Mice Using the Golgi-Cox Method
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Cited by 18 •
2017
Here we present a Golgi-Cox protocol in extensive detail. This reliable tissue stain method allows for a high-quality assessment of the cytoarchitecture in the hippocampus, and throughout the entire brain, with minimal troubleshooting.
06:35
Fluorescence Recovery After Photobleaching (FRAP) of Fluorescence Tagged Proteins in Dendritic Spines of Cultured Hippocampal Neurons
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Cited by 33 •
2011
FRAP has been used to quantify the mobility of Green Fluorescence Protein (GFP)-tagged proteins in cultured cells. We examined the mobile/immobile fractions of the GFP by analyzing the fluorescence recovery percentage after photobleaching. In this study, FRAP was performed at spines of hippocampal neurons.
15:40
Nucleofection and Primary Culture of Embryonic Mouse Hippocampal and Cortical Neurons
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Cited by 63 •
2011
This protocol outlines the steps required to dissect, transfect via electroporation and culture mouse hippocampal and cortical neurons. Short-term cultures may be used for studies of axon outgrowth and guidance, while long-term cultures can be used for studies of synaptogenesis and dendritic spine analysis.
FAQs
Dendritic spines provide specialized sites where selected synapses can influence the receiving neuron. Their distribution and functional state help determine which inputs are emphasized during signal integration. Because activity-dependent strengthening can affect selected synapses, spine-related changes offer a structural and functional way to investigate how particular connections contribute to memory formation and experience-dependent circuit adaptation.
Ion channels shape how electrical signals spread through dendritic branches and how strongly inputs affect the neuron. Their activity influences the combination of excitatory and inhibitory signals, rather than merely transmitting every input unchanged. Examining these channels therefore helps explain how dendritic structure supports hippocampal computation and how altered electrical integration may affect learning-related circuit function.
Spatial summation reflects the combined effect of inputs arriving at different locations, whereas temporal summation reflects inputs occurring close together in time. Hippocampal dendrites use both dimensions to determine the resulting signal, with branching patterns, synaptic placement, spines, and ion channels influencing the outcome. This distinction helps researchers analyze how complex input patterns are converted into neuronal responses.
Long-term potentiation strengthens selected synapses after activity-dependent changes, allowing prior patterns of neural activity to leave a lasting effect on circuit function. In hippocampal dendrites, this process connects local synaptic modification with broader questions about memory formation. Studying it helps identify how experience can alter the effectiveness of particular inputs without requiring uniform strengthening across all connections.
Researchers compare dendritic morphology and synaptic function across models of aging, epilepsy, and stress to determine how these conditions alter connectivity. Changes in branching, spines, or signal handling can reveal disruptions in hippocampal computation. These comparisons are useful because they link cellular-level alterations with broader questions about how changed circuit organization may influence behavior and memory-related function.
Dendritic morphology, including the organization of branches and spines, provides information about how a neuron is positioned to receive and integrate inputs. Comparing these structural features with synaptic function can indicate whether altered connectivity accompanies changes in circuit processing. In neuroscience research, this approach helps connect cellular architecture with spatial-information encoding, memory formation, and adaptation to experience.
Neurodegenerative disease models can be used to examine whether disrupted dendritic structure or synaptic function changes the way hippocampal circuits process information. Such analyses focus on connectivity and integration rather than on isolated neuronal components. The resulting evidence can clarify how cellular alterations contribute to impaired memory-related computation and can distinguish structural changes from functional changes in synaptic signaling.