Cortical Slice Preparation
Cortical Slice Preparation - Related Videos
18:02
Preparation of Dissociated Mouse Cortical Neuron Cultures
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Cited by 146 •
2007
This video shows a procedure for generating neuronal cultures from late embryo and early postnatal mouse cortex. These cultures can be used for immunocytochemistry, biochemistry, electrophysiology, calcium and sodium imaging and provide a platform to study the neuronal development of transgenic animals that carry a postnatal lethal gene mutation.
02:58
Transplantation of Stem Cell-Derived Neuronal Progenitors into Human Cortical Slices
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2025
Source: Palma-Tortosa, S., et.al. Organotypic Cultures of Adult Human Cortex as an Ex vivo Model for Human Stem Cell Transplantation and Validation. J. Vis. Exp. (2022)This video demonstrates the transplantation of stem cell-derived neuronal progenitor cells into human cortical tissue slices. The procedure involves isolating and resuspending progenitor cells in a basement membrane matrix, followed by their injection into a cortical slice placed on a transwell assembly. After incubation to allow...
03:10
Generation of Spontaneous and On-Demand Ictal Events in Mouse Brain Cortical Slices
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2025
This video demonstrates the induction of ictal events in coronal cortical slices from a transgenic mouse expressing light-activated cation channels in cortical excitatory pyramidal neurons. The slice is placed in a recording chamber, and a recording electrode is inserted into the superficial cortical layer. Upon perfusion with a seizure-inducing drug that blocks potassium channels, the neurons become hyperexcitable and generate spontaneous ictal events. To generate on-demand ictal events, a...
04:59
Visualization of Amyloid-Beta Peptides in Human Cortical Brain Slices
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2025
The video demonstrates a procedure for preparing human cortical brain slices from Alzheimer's disease patients for analyzing the deposition of amyloid-beta (Aβ) peptides using Matrix-assisted Laser Desorption/Ionization Imaging Mass Spectrometry (MALDI-IMS). The steps include preparing the slides, treating the tissue to enhance ionization, and analyzing the spatial distribution of amyloid-beta peptides.
08:12
Thin Sectioning of Slice Preparations for Immunohistochemistry
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Cited by 7 •
2007
The present method allows reproducible cryostat sectioning of small, difficult-to-manage, tissue pieces, such as biopsies and brain slices. We utilize a simple aluminum freezing stage to facilitate handling of tissue and a standard cryostat to routinely produce 5-10 micron serial sections from 400 micron thick brain slices.
FAQs
Chilled, oxygenated artificial cerebrospinal fluid provides the stabilization conditions needed after tissue isolation and before sectioning. This step helps maintain viable cortical tissue while researchers prepare thin sections for controlled experiments. The resulting preparation can then support measurements of neuronal activity, synaptic connectivity, and responses to pharmacological or stimulation-based interventions.
A vibratome or similar instrument produces thin sections while preserving cellular structure and some local synaptic connections. Retaining these elements is important because neuronal responses can be studied within a surviving piece of cortical organization rather than in isolated cells alone. This makes the preparation valuable for examining circuit-level activity and connectivity.
Cortical slices provide direct experimental access to neural tissue outside the intact brain while retaining elements of native cortical organization. Researchers can control the surrounding conditions and apply drugs or stimulation while monitoring responses with selected recording or imaging methods. This balance between access and preserved local circuitry supports precise analysis of cellular and circuit mechanisms.
The preparation depends on maintaining tissue stability and oxygenation during handling, followed by appropriate sectioning of the freshly isolated cortex. Preserving cellular structure and local synaptic connections is especially important for interpreting neuronal activity or connectivity measurements. If these features are not maintained, experiments may provide less representative information about cortical function.
The workflow begins with freshly isolated cortical tissue, which is stabilized in chilled, oxygenated artificial cerebrospinal fluid. The stabilized tissue is then sectioned into thin slices using a vibratome or similar instrument. These sections provide the experimental material for subsequent electrophysiology, calcium imaging, pharmacology, or microscopy studies.
A vibratome or comparable sectioning instrument is used to produce thin cortical sections, while chilled, oxygenated artificial cerebrospinal fluid supports tissue stabilization during preparation. Together, the cutting equipment and medium help preserve the cellular and local synaptic features required for downstream measurements. The selected experimental readout then determines whether electrophysiology, imaging, pharmacology, or microscopy is performed.
Prepared slices can be examined through electrophysiology, calcium imaging, pharmacology, and microscopy. These approaches provide complementary information about neuronal activity, cellular calcium-related signals, responses to drugs, tissue structure, and local circuit connectivity. Using controlled conditions, investigators can relate observed responses to stimulation or treatment while examining the organization of the cerebral cortex.
This preparation supports investigations of development, sensory processing, synaptic plasticity, and neurological disease mechanisms. Its value comes from combining experimental access with retained elements of cortical organization. Researchers can therefore examine how local neuronal circuits function, change, or respond to pharmacological manipulation in a controlled setting that remains more organized than isolated-cell preparations.