Layer Ii/iii Pyramidal Neurons
Layer Ii/iii Pyramidal Neurons - Related Videos
02:08
Generating Cortical Pyramidal Neurons from Human Neural Stem Cells
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2025
This video describes a method for preparing glass coverslips coated with polyornithine and laminin to enhance the adhesion and growth of neural stem cells. The technique involves sequential incubations and washes, facilitating the formation of a supportive matrix that promotes neuronal cell growth and differentiation, mimicking structures found in the neurons.
13:44
A Method for High Fidelity Optogenetic Control of Individual Pyramidal Neurons In vivo
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Cited by 2 •
2013
The recent development of neuroscience tools that combine genetics and optics, termed "optogenetics", enables control over neural circuit activity with an unprecedented level of spatial and temporal resolution. Here we provide a protocol for integrating in vivo recording with optogenetic manipulation of genetically-defined subsets of prefrontal cortical and subicular pyramidal neurons.
03:03
Generating an Ultra-Low-Density Neuronal Culture Using a High-Density Neuronal Feeder Layer
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2025
This video demonstrates the method for culturing ultra-low-density neurons in the presence of a high-density neuronal feeder layer. It establishes a co-culture of varying-density neurons, ensuring close physical proximity. The growth factors secreted by high-density neurons help neuronal survival and growth, maintaining ultra-low-density neurons for a longer time period.
10:18
Three-dimensional Quantification of Dendritic Spines from Pyramidal Neurons Derived from Human Induced Pluripotent Stem Cells
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Cited by 7 •
2015
Dendritic spines of pyramidal neurons are the sites of most excitatory synapses in mammalian brain cortex. This method describes a 3D quantitative analysis of spine morphologies in human cortical pyramidal glutamatergic neurons derived from induced pluripotent stem cells.
09:40
Ballistic Labeling of Pyramidal Neurons in Brain Slices and in Primary Cell Culture
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Cited by 14 •
2020
We present a protocol to label and analyze pyramidal neurons, which is critical for evaluating potential morphological alterations in neurons and dendritic spines that may underlie neurochemical and behavioral abnormalities.
FAQs
The apical and basal dendritic arrangement gives these cells separate sites for collecting synaptic information: apical branches extend toward the cortical surface, whereas basal branches receive input around the cell body. This geometry supports integration of signals before glutamate-mediated excitation drives an action potential, linking incoming activity to downstream cortical communication.
Glutamate-mediated signaling provides the excitatory drive that converts synaptic input into neuronal output. In Layer II/III pyramidal neurons, this process helps determine whether integrated inputs reach the threshold for action-potential generation and are transmitted through the axon. Consequently, changes in incoming activity can influence cortical information processing and network plasticity.
Local horizontal and corticocortical connections represent different scales of communication. Horizontal axons can distribute activity within a cortical area, while corticocortical projections carry information between cortical areas. Examining both pathways helps explain how superficial-layer neurons participate in local integration while also contributing to broader cortical coordination during sensory processing and perception.
Electrophysiology, imaging, and circuit mapping answer complementary questions about these neurons. Electrophysiology examines electrical activity and action-potential output; imaging tracks activity patterns; circuit mapping identifies connectivity. Using these approaches together can relate cellular responses to network organization, making it possible to study how Layer II/III circuits support normal cortical function.
Researchers choose among these approaches according to the information they need. Electrophysiological measurements can characterize activity and action-potential output, imaging can reveal patterns of activation, and circuit mapping can examine local or corticocortical connectivity. Comparing findings across methods connects cellular behavior with circuit structure, which is important when interpreting cortical information flow.
Their position in cortical information networks makes Layer II/III pyramidal neurons relevant to sensory processing, perception, learning, and cortical plasticity. Studying their activity and connectivity helps researchers examine how cortical circuits adapt during normal function. The same approaches can also identify changes associated with neurological and psychiatric disorders, providing circuit-level context for altered brain function.