Neuronal Function Assessment
Neuronal Function Assessment - Related Videos
09:43
Functional and Morphological Assessment of Diaphragm Innervation by Phrenic Motor Neurons
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Cited by 16 •
2015
Compound muscle action potential recording quantitatively assesses functional diaphragm innervation by phrenic motor neurons. Whole-mount diaphragm immunohistochemistry assesses morphological innervation at individual neuromuscular junctions. The goal of this protocol is to demonstrate how these two powerful methodologies can be used in various rodent models of spinal cord disease.
10:26
Rewiring Neuronal Circuits: A New Method for Fast Neurite Extension and Functional Neuronal Connection
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Cited by 8 •
2017
This procedure describes how to rapidly initiate, extend and connect neurites organized in microfluidic chambers using poly-D-lysine-coated beads fixed to micropipettes that guide neurite elongation.
04:38
Assessing Neuronal Viability in a Cerebellar Neuron Culture via Double Staining
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2025
This video demonstrates the method of identifying neurons from a mixed culture of cerebellar granule neurons and glial cells using dual staining with fluorescein diacetate (FDA) and propidium iodide (PI), where live neurons appear green and dead neurons appear red.
04:00
Luminescence-Based Assay to Assess Neurotoxicity of Test Compounds on Neurons
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2025
In this video, we describe a luminescence-based method to assess the neurotoxicity of neurite outgrowth-promoting small molecule compounds on the viability of hNPC-derived neurons. The assay measures intracellular ATP level, an indicator of cell viability, to evaluate neurotoxicity following test compound treatment.
07:03
Initiating Rapid Neurite Extension and Formation Functional Neuronal Connections
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2025
This video demonstrates a technique for the rapid initiation and extension of a neuron and creation of new connections with a target neuron using a microfluidic device and micromanipulation. This could be used for therapies that aim to reconnect neuronal circuits after trauma or in neurodegenerative diseases.
FAQs
Different measurements expose different stages of neuronal signaling. Membrane-potential recordings indicate the electrical state of a neuron, while action-potential measurements show how excitability produces rapid signals. Synaptic-transmission assays address communication between neurons, and intracellular calcium measurements track calcium dynamics associated with neuronal activity. Together, these readouts help distinguish altered excitability from impaired communication.
Electrophysiology can be used to measure membrane potential, action potentials, and synaptic transmission, whereas imaging can assess intracellular calcium dynamics. Using these complementary readouts allows investigators to examine electrical signaling alongside activity-linked cellular changes. The choice depends on which functional property or response the experiment is designed to evaluate.
Drug exposure and genetic manipulation can be evaluated by measuring how they change neuronal excitability, synaptic transmission, or intracellular calcium dynamics. Comparing these functional readouts under different experimental conditions helps link an intervention to a cellular effect. Such comparisons can reveal whether a manipulation primarily affects signal generation, neuron-to-neuron communication, or another measured aspect of activity.
A study typically begins by identifying the neuronal property of interest, such as membrane potential, action potentials, synaptic transmission, or calcium dynamics. Researchers then choose electrophysiology, imaging, or a related assay suited to that property, measure responses under defined experimental conditions, and interpret differences in relation to excitability, connectivity, or communication.
Neuronal function assessment is useful across several neuroscience questions rather than a single disease model. It can support studies of brain development, neural circuits, neurological disorders, and responses to drugs or genetic manipulations. In each setting, functional measurements provide cellular evidence that can be related to changes in neuronal excitability, connectivity, communication, or broader disease-associated outcomes.
Functional measurements help researchers move from cellular observations toward systems-level interpretation. Changes in excitability, synaptic communication, or calcium dynamics can be examined alongside experimental conditions and, when relevant, behavioral or disease-related outcomes. This connection helps place neuronal measurements within studies of neural circuits and clarifies how cellular mechanisms may contribute to observable nervous-system effects.