Motor Neuron Recording
Motor Neuron Recording - Related Videos
07:29
Paired Patch Clamp Recordings from Motor-neuron and Target Skeletal Muscle in Zebrafish
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Cited by 17 •
2010
Larval zebrafish represent the first vertebrate model system to allow simultaneous patch clamp recording from a spinal motor-neuron and target skeletal muscle. This video demonstrates the microscopic methods used to identify a segmental CaP motor-neuron and target muscle cells as well as the methodologies for recording from each cell type.
13:37
Extracellularly Identifying Motor Neurons for a Muscle Motor Pool in Aplysia californica
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Cited by 23 •
2013
In animals with large identified neurons (e.g. mollusks), analysis of motor pools is done using intracellular techniques1,2,3,4. Recently, we developed a technique to extracellularly stimulate and record individual neurons in Aplysia californica5. We now describe a protocol for using this technique to uniquely identify and characterize motor neurons within a motor pool.
08:24
Zebrafish In Situ Spinal Cord Preparation for Electrophysiological Recordings from Spinal Sensory and Motor Neurons
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Cited by 3 •
2017
This manuscript describes methods for electrophysiological recordings from spinal neurons of zebrafish embryos and larvae. The preparation maintains neurons in situ and often involves minimum dissection. These methods allow for the electrophysiological study of a variety of spinal neurons, from the initial electrical excitability acquisition through the early larval stages.
05:45
Recording Electrophysiological Activity of the Neuronal Network in a Neuron-Astrocyte Co-culture
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2025
This video demonstrates establishing a neuron-astrocyte co-culture for recording neuronal network activity. Upon establishing the co-culture of motor neurons and astrocytes on a multi-electrode array (MEA) plate, the synchronous rhythmic electrical activity of the neuronal network was recorded extracellularly using the MEA.
03:31
Intramuscular Injections Along the Motor End Plates to Shuttle Tracers Directly into Rat Motor Neurons
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2025
Source: Mohan, R., et al. Intramuscular Injections Along the Motor End Plates: A Minimally Invasive Approach to Shuttle Tracers Directly into Motor Neurons. J. Vis. Exp. (2015)This video demonstrates the targeted delivery of a fluorescent neuronal tracer into motor neurons via intramuscular injection at the motor end plates (MEPs). It outlines the steps involved in preparing the rat, injecting the tracer, and assessing labeled motor neurons for neurotherapeutic potential.
FAQs
Intracellular electrodes can capture changes in a motor neuron's membrane potential, including synaptic inputs that influence its state. Extracellular electrodes detect electrical activity outside the cell, including action potentials generated during neural signaling. Comparing these approaches helps distinguish gradual input-related changes from the discrete electrical events associated with motor neuron activity.
Stimulation provides a controlled way to examine how motor neurons respond to defined neural inputs. Researchers can assess changes in membrane potential and action-pot activity after stimulation, then compare those responses with activity produced by patterned network signals. This separates stimulus-related responses from activity emerging within the motor circuit itself.
Synaptic inputs show how signals arriving from other neurons influence motor neuron electrical behavior before or alongside action potentials. Recording these inputs helps researchers connect network activity with the motor neuron's output and evaluate how neural circuits organize commands for muscle activation. This relationship is central to understanding coordinated movement rather than isolated firing alone.
Patterned network activity can produce organized changes in motor neuron electrical signals rather than isolated responses to a single stimulus. Examining these patterns allows researchers to relate membrane-potential changes and action potentials to circuit timing and motor output. Such recordings are especially relevant when studying neural activity associated with locomotion and other coordinated movements.
In locomotion research, recordings can link motor neuron activity with the neural commands that underlie movement and muscle activation. Researchers can examine how electrical patterns change during organized network activity and use those observations to analyze motor-circuit function. The resulting data help clarify how nervous-system signals support coordinated movement.
Recordings provide a direct way to examine how injury or neurological disease affects motor-circuit activity and neuromuscular control. Researchers can compare membrane-potential changes, action potentials, or synaptic inputs under different conditions to identify altered signaling patterns. These observations support investigation of disease mechanisms and evaluation of therapeutic strategies intended to restore movement.