Ca1 Region
Ca1 Region - Related Videos
03:10
Recording CA3-CA1 Synaptic Responses in a Rat Hippocampal Slice
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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.
09:06
Stereotactic Injection of MicroRNA-expressing Lentiviruses to the Mouse Hippocampus CA1 Region and Assessment of the Behavioral Outcome
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Cited by 23 •
2013
MicroRNAs have significant roles in brain structure and function. Here we describe a method to enforce hippocampal miRNA over-expression using stereotactic injection of an engineered miRNA-expressing lentivirus. This approach can serve as a relatively rapid way to assess the in vivo effects of over-expressed miRNAs in specific brain regions.
02:58
Generating Local Cornu Ammonis 1 (CA1) Gamma Oscillations Using Tetanic Stimulations in a Hippocampal Brain Slice
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2025
This video demonstrates the procedure of inducing local CA1 gamma oscillations in a CA1 hippocampal mouse brain slice using tetanic simulations. This method is important to understand the neuronal network activity.
08:02
Generation of Local CA1 γ Oscillations by Tetanic Stimulation
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Cited by 2 •
2015
Oscillations are fundamental network properties and are modulated by disease and drugs. Studying brain-slice oscillations allows characterization of isolated networks under controlled conditions. Protocols are provided for the preparation of acute brain slices for evoking CA1 γ oscillations.
01:03
IR Frequency Region: Fingerprint Region
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2024
IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the C=O, C=N, and C=C occur between 1600–1850 cm−1. The...
FAQs
Synaptic strengthening depends on the timing of activity on both sides of the connection. Presynaptic CA3 pyramidal neurons deliver excitatory input through Schaffer collateral fibers, while depolarization occurs in the receiving CA1 pyramidal cell. When these events coincide, NMDA receptor-dependent long-term potentiation can increase synaptic strength, providing a cellular mechanism for lasting changes associated with memory formation.
NMDA receptor-dependent long-term potentiation gives researchers a way to examine how coordinated neural activity produces persistent synaptic changes. In CA1 circuits, the relevant interaction links incoming CA3 signals with postsynaptic depolarization in CA1 pyramidal cells. Measuring this plasticity helps connect cellular events to questions about learning, memory formation, and retrieval without treating neural activity as a static process.
CA3 pyramidal neurons provide a defined excitatory input to CA1 pyramidal cells through Schaffer collateral fibers. This arrangement allows experiments to separate activity arriving from an upstream hippocampal subfield from responses generated in CA1. Studying that connection clarifies how incoming information is integrated and how changes at a specific synapse may contribute to episodic and spatial memory processes.
CA1 recordings can show how neuronal responses and synaptic changes relate to information processing in the hippocampus. When combined with manipulations of the circuit, they help investigators examine the relationship between cellular mechanisms and behavior. This approach is useful for studying memory-related activity as well as changes associated with synaptic plasticity, neuronal injury, oxygen limitation, epilepsy, and aging.
Researchers use recordings to observe activity or synaptic responses in CA1, while manipulations test whether altering the circuit changes a measured outcome. Interpreting these results alongside behavioral observations can link cellular plasticity to learning, episodic memory, or spatial memory. The combined strategy is valuable because it examines both mechanisms within the circuit and their functional significance at the behavioral level.
The CA1 region is especially informative in these studies because its circuitry is sensitive to changes in synaptic plasticity, oxygen supply, and neuronal injury. Investigators can therefore use CA1 measurements to examine how disease- or age-related conditions affect hippocampal function. Findings may reveal how altered cellular responses relate to memory disruption, seizure-related changes, or damage caused by insufficient oxygen.