Neuron Visualization

Neuron visualization is the use of imaging methods to reveal the structure, organization, activity, and connections of nerve cells, making otherwise microscopic features accessible for neuroscience research. Techniques such as fluorescence labeling, immunostaining, and light or electron microscopy generate contrast by marking cellular components or resolving them through differences in emitted light, transmitted light, or ultrastructure. Researchers use these approaches to examine neuronal morphology, trace axons and dendrites, map neural circuits, and monitor changes associated with development, disease, or experimental treatment. By linking cellular structure with function, neuron visualization supports studies of brain connectivity, signaling, and nervous system organization.

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JoVE EoE - Neuropathology

Visualization of Vesicle Motilities in Neurons Using Fluorescence Imaging

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2025

This video demonstrates how neuronal vesicles are labeled with specific fluorescent proteins to visualize their movement. First, a plasmid coding for a fluorescent protein is incubated with a transfection agent and then introduced into a culture of neurons. Subsequently, images of the neurons are acquired and analyzed to track the vesicles' movement.

Visualization and Mapping of Neuronal Pathways in an Amygdala Brain Slice

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2025

This video demonstrates a procedure for analyzing synaptic connectivity between medial prefrontal cortex (mPFC) and amygdala neurons using acute amygdala brain slices from mice. The mPFC neurons in these mice express channelrhodopsin fused to a fluorescent protein. The channelrhodopsins facilitate ion influx and action potential generation in the mPFC neurons upon light activation. Consequently, mPFC neurons release neurotransmitters that bind to postsynaptic amygdala neurons, triggering...

In Vivo Imaging of Zebrafish Larval Brain for Visualizing Cerebellar Neurons

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2025

Source: Schramm, P. et al. In vivo Imaging of Fully Active Brain Tissue in Awake Zebrafish Larvae and Juveniles by Skull and Skin Removal. J. Vis. Exp. (2021)This video demonstrates the in vivo imaging of cerebellar neurons in transgenic zebrafish larvae, which express fluorescent proteins in Purkinje neurons. The process involves anesthetizing the larvae, immobilizing them in agarose, and carefully removing the pigmented skin to enhance light penetration and fluorescence intensity. Finally,...

Visualizing the Synaptogenesis of Cerebellar Granule Neurons at Different Developmental Stages

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2025

Source: Chan, U., et al., Utilizing In Vivo Postnatal Electroporation to Study Cerebellar Granule Neuron Morphology and Synapse Development. J. Vis. Exp. (2021).This video demonstrates the analysis of cerebellar granule neuron development by imaging pre-fixed brain tissue slices from mice labeled with a fluorescent protein, capturing high-resolution z-stack images with a confocal microscope, and measuring structural parameters including neurite length, dendritic claw formation, surface area,...

Visualizing Mushroom Body Neurons in Drosophila Brains via Immunostaining

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2025

This video demonstrates a detailed immunostaining protocol to visualize phenotypic defects in the mushroom bodies of mutant Drosophila brains. The protocol involves using antibodies against Fas2, a protein involved in axonal guidance that facilitates the proper morphological and functional development of the mushroom body.

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