Pyramid Prism
Pyramid Prism - 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.
10:35
Multi-layer Cortical Ca2+ Imaging in Freely Moving Mice with Prism Probes and Miniaturized Fluorescence Microscopy
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Cited by 26 •
2017
Here, we present a procedure for performing large-scale Ca2+ imaging with cellular-resolution across multiple cortical layers in freely moving mice. Hundreds of active cells can be observed simultaneously using a miniature, head-mounted microscope coupled with an implanted prism probe.
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.
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.
06:12
Virtual Prism Adaptation Therapy: Protocol for Validation in Healthy Adults
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Cited by 14 •
2020
This experimental protocol demonstrates the use of virtual prism adaptation therapy (VPAT) in healthy adults and the association between VPAT and functional near infrared spectroscopy to determine the effect of VPAT on cortical activation. Results suggest that VPAT may be feasible and could induce similar behavioral adaptation as conventional prism adaptation therapy.
FAQs
The apex geometry and the angles of the prism faces determine how strongly an incoming beam changes direction. Altering these features changes the relationship between the beam and each refracting surface, which can modify the final deviation or create different output directions. Engineers therefore use the geometry as a design variable when precision beam steering or controlled multi-axis deflection is required.
Refractive index affects the amount of bending that occurs as light crosses each angled surface. Through Snell’s law, the index works with the incident geometry to determine the beam’s changed path. A design must therefore consider both material-dependent refraction and face orientation, because their combination controls whether the component provides the intended steering, alignment, or measurement response.
A pyramid form presents multiple angled faces rather than a single dominant deflecting surface. Depending on the apex arrangement and face angles, light can be redirected along several paths instead of receiving only one overall change in direction. This multi-directional behavior makes the component useful where an optical system must manage beams across more than one axis within a compact arrangement.
Begin by selecting a prism geometry and refractive index suited to the required beam direction, then place the component so the incoming light meets its angled surfaces as intended. Inspect the resulting path and adjust the prism or its alignment until the beam reaches the desired position. This workflow uses the component’s predictable refraction to support precise optical alignment.
Pyramid Prism systems are relevant to optical setups that require accurate manipulation of light in limited space. The overview identifies beam steering, alignment, imaging, and optical measurement as important uses, with further relevance to instrumentation, metrology, and microscopy. In each case, the prism’s controlled directional change can help organize or measure light within a precision system.
In measurement-oriented systems, the prism’s known relationship between face geometry, refractive index, and beam deviation provides a controllable optical response. Engineers can use the resulting beam direction as part of an alignment or measurement arrangement, while the compact form helps integrate multiple directional changes. This is especially relevant to precision instrumentation, metrology, and microscopy.