Synaptic Transmission Analysis
Synaptic Transmission Analysis - Related Videos
18:01
Paradigms for Pharmacological Characterization of C. elegans Synaptic Transmission Mutants
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Cited by 20 •
2008
This video demonstrates how to employ two neural stimulants, aldicarb and pentylenetetrazole (PTZ), in complementary ways to study synaptic function in the nematode, C. elegans. This complementary approach may also be used to shed light on evolutionarily conserved mechanisms for modulating neuronal synchrony and has implications for epilepsy and seizures.
08:38
Vibrodissociation of Neurons from Rodent Brain Slices to Study Synaptic Transmission and Image Presynaptic Terminals
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Cited by 17 •
2011
This report demonstrates a technique for mechanical isolation of individual viable neurons retaining attached presynaptic boutons. Vibrodissociated neurons have the advantages of rapid production, excellent pharmacological control and improved space-clamp without influence from neighboring cells. This method can be used for imaging of synaptic elements and patch-clamp recording.
05:41
Transmission Electron Microscopic Imaging of Synaptic Vesicle Endocytosis in Mouse Hippocampal Neurons
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2025
Source: Villarreal, S., et. al., Measuring Synaptic Vesicle Endocytosis in Cultured Hippocampal Neurons. J. Vis. Exp. (2017)This video demonstrates the analysis of synaptic vesicle endocytosis in cultured hippocampal neurons through horseradish peroxidase labeling and electron microscopy.
08:46
Studying Synaptic Vesicle Pools using Photoconversion of Styryl Dyes
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Cited by 18 •
2010
FM dyes have been of invaluable help in the understanding of synaptic dynamics. FMs are normally followed under the fluorescent microscope during different stimulation conditions. However, photoconversion of FM dyes combined with electron microscopy allows the visualization of distinct synaptic vesicle pools, among other ultrastructure components, in synaptic boutons.
12:06
Transmission Electron Microscopy as the Visualization Technique for Analysis of Circadian Synaptic Plasticity in the Mouse Barrel Cortex
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Cited by 1 •
2025
The presented protocol describes the use of transmission electron microscopy (TEM) to quantify circadian changes in the mouse barrel cortex, mainly focusing on synapse number and dendritic spine morphology.
FAQs
Calcium influx is a key link between an arriving action potential and neurotransmitter release from the presynaptic terminal. By examining this sequence, researchers can evaluate how effectively electrical activity is converted into chemical signaling across the synaptic cleft. This helps explain changes in synaptic strength and provides a mechanistic basis for analyzing neuronal communication.
Synaptic strength describes the effectiveness of communication between a presynaptic terminal and a postsynaptic cell, while timing concerns the order and temporal relationship of signaling events. Plasticity refers to changes in synaptic communication over time. Measuring these properties allows researchers to characterize how neural connections function and how their behavior may contribute to learning, memory, or sensory processing.
Electrophysiology examines electrical activity associated with synaptic communication, imaging provides a way to observe relevant signaling events, and molecular approaches investigate associated biological components. Because each approach addresses a different aspect of transmission, combining them can give a more complete assessment of synaptic strength, timing, and plasticity than relying on a single type of measurement.
The sequence from action-potential arrival to calcium influx, neurotransmitter release, receptor binding, and altered postsynaptic electrical activity provides a framework for interpreting results. A measurement can therefore be related to a particular stage of communication rather than treated as an isolated signal. This ordering helps connect observed changes with presynaptic or postsynaptic function.
A workflow follows the major signaling stages at the synapse and selects measurements that correspond to them. Researchers examine presynaptic action-potential arrival, calcium entry, neurotransmitter release, receptor binding, and the resulting postsynaptic electrical change. Electrophysiology, imaging, and molecular approaches can then be used to assess transmission properties and compare synaptic behavior.
The analysis can reveal how individual synaptic events contribute to broader neural-circuit function by measuring communication strength, timing, and plasticity. These findings help investigators relate cellular signaling to learning and memory, sensory processing, and overall nervous system function. The approach is therefore useful for connecting mechanisms at synapses with biological outcomes at the circuit level.
Synaptic transmission analysis helps investigate neurological disorders by identifying changes in neuronal communication and examining how those changes affect synaptic function. It also supports the development and evaluation of therapies designed to alter neuronal signaling. Comparing synaptic strength, timing, or plasticity before and after an intervention can provide evidence about its effects on communication between neurons and target cells.