Ca3 Stratum Radiatum
Ca3 Stratum Radiatum - Related Videos
03:10
Recording CA3-CA1 Synaptic Responses in a Rat Hippocampal Slice
0 Views •
2025
This video demonstrates a method to record CA3-CA1 synaptic responses in a rat hippocampal slice. It outlines the steps involved in placing the stimulating and recording electrodes on the hippocampal slice and measuring the field excitatory postsynaptic potential (fEPSP) to assess synaptic response strength.
03:41
Measurement of Evoked Potassium Ion Concentration Dynamics in Coronal Hippocampal Slices
0 Views •
2025
The video demonstrates evoked potassium ion concentration dynamics on electrical stimulation of mouse coronal hippocampal brain slices. A bipolar stimulating electrode is inserted into the stratum radiatum of the CA3 region in the hippocampus, and a potassium-ion selective electrode is placed in the CA1 stratum radiatum. The electrical stimulation causes an action potential, resulting in potassium ion release. Finally, the lack of evoked potassium ion response in the presence of an inhibitory...
08:00
Measuring and Modeling Contractile Drying in Human Stratum Corneum
0 Views •
Cited by 2 •
2017
This article describes a method of quantifying the dynamic drying behavior and mechanical properties of stratum corneum by measuring spatially resolved in-plane drying displacements of circular tissue samples adhered to an elastomer substrate. This technique can be used to measure how different chemical treatments alter drying and tissue mechanical properties.
02:44
Recording of Local Field Potential in Mouse Hippocampal-Entorhinal Cortex Slices
0 Views •
2025
The video demonstrates a procedure to record the local field potential (LFP) in mouse hippocampal-entorhinal cortex slices. Electrical stimulation is provided at the CA3 stratum radiatum of the hippocampus, which causes changes in the postsynaptic potential at the CA1 stratum pyramidale. The combined change in the membrane potential of CA1 neurons, termed the local field potential, is recorded.
02:39
In Vitro Recording of Theta Oscillations in the Mouse Hippocampus
0 Views •
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.
FAQs
Recurrent collateral fibers provide excitatory input to the dendritic region of CA3 pyramidal neurons. Because these connections are glutamatergic, activity at their synapses can alter the electrical responses of the receiving cells. This arrangement allows activity within the CA3 network to influence other CA3 neurons, supporting communication across the circuit and providing a substrate for activity-dependent changes.
Apical dendrites provide the structural sites where incoming and recurrent excitatory signals converge on CA3 pyramidal neurons. Their distribution in the layer enables synaptic inputs to modify neuronal activity before that influence contributes to circuit output. Examining these dendrites therefore helps connect cellular-level synaptic events with the broader integration of hippocampal network signals.
Synaptic plasticity changes the strength or functional impact of communication between neurons, while long-term potentiation represents a form of lasting enhancement associated with these synapses. In CA3 stratum radiatum, such changes can modify how recurrent glutamatergic inputs influence pyramidal neurons. This provides a mechanism for studying how hippocampal activity patterns may contribute to memory formation.
Electrophysiology, imaging, and anatomical tracing are used to examine different aspects of this region. Electrophysiology can assess neuronal activity, imaging can visualize relevant cellular or circuit features, and anatomical tracing can investigate organization and connections. Using these approaches individually or together helps researchers relate dendritic structure, synaptic input, and network communication to hippocampal function.
Investigations of CA3 stratum radiatum can show how hippocampal networks encode spatial and contextual information. Researchers can examine how activity and connectivity within the dendrite-rich region relate to the integration of recurrent and incoming signals. These observations help link cellular mechanisms, including synaptic modification, with the circuit processes underlying representations of places and contexts.
Its organized dendritic structure and recurrent excitatory connectivity provide a defined setting for examining how hippocampal communication changes during dysfunction. Electrophysiological, imaging, or anatomical studies can evaluate alterations in neuronal activity, synaptic plasticity, or circuit organization. Findings from this model may clarify cellular contributors to impaired memory formation and the neural basis of neurological disease.