Planar Mea
Planar Mea - Related Videos
09:14
High efficiency, Site-specific Transfection of Adherent Cells with siRNA Using Microelectrode Arrays (MEA)
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Cited by 4 •
2012
The article details the protocol for site-specific transfection of scrambled sequence of siRNA in an adherent mammalian cell culture using a microelectrode array (MEA).
09:27
How to Culture, Record and Stimulate Neuronal Networks on Micro-electrode Arrays (MEAs)
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Cited by 86 •
2010
This protocol provides the necessary information for setting up, caring for, recording from and electrically stimulating cultures on MEAs. In vitro networks provide a means for asking physiologically relevant questions at the network and cellular levels leading to a better understanding of brain function and dysfunction.
10:49
Planar and Three-Dimensional Printing of Conductive Inks
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Cited by 58 •
2011
Planar and three-dimensional printing of conductive metallic inks is described. Our approach provides new avenues for fabricating printed electronic, optoelectronic, and biomedical devices in unusual layouts at the microscale.
02:46
Crystal Field Theory - Tetrahedral and Square Planar Complexes
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2020
Tetrahedral Complexes Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
11:13
Electrophysiological Analysis of human Pluripotent Stem Cell-derived Cardiomyocytes (hPSC-CMs) Using Multi-electrode Arrays (MEAs)
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Cited by 44 •
2017
Electrophysiological characterization of cardiomyocytes derived from human Pluripotent Stem Cells (hPSC-CMs) is crucial for cardiac disease modeling and for determining drug responses. This protocol provides the necessary information to dissociate and plate hPSC-CMs on multi-electrode arrays, measure their field potential, and a method for analyzing QT and RR intervals.
FAQs
The electrodes detect extracellular voltage changes produced when neurons generate action potentials or when neural networks become active. Because each electrode samples signals near its location, the resulting recordings reflect local activity rather than a single whole-culture measurement. This arrangement allows researchers to compare electrical events across multiple neural sites at the same time.
Electrode position adds spatial information to the electrical recording. By comparing activity across neighboring or separated sites, researchers can examine firing patterns, synchrony, and the propagation of activity through a neural network. The spatial layout also supports quantitative comparisons among recording locations, helping reveal whether activity is localized, coordinated, or distributed.
Selected electrodes can deliver electrical stimulation in addition to recording extracellular activity. This combines controlled electrical input with simultaneous observation of neural signals across the array. Researchers can therefore examine how activity is organized in relation to stimulation, while other electrodes monitor responses at different locations within the cultured or positioned neural tissue.
Functional connectivity is inferred from coordinated activity among recording sites rather than from anatomy alone. Patterns such as synchronized firing or the spread of activity between locations provide evidence about how network regions operate together. Because a planar MEA records many sites simultaneously, it can relate timing and spatial distribution across the network.
Neurons are cultured on the array or placed above it so their electrical activity occurs near the electrodes. The array then records extracellular voltage changes from multiple sites, while selected electrodes may provide stimulation. Researchers examine the resulting firing patterns, synchrony, propagation, and connectivity to characterize the network’s functional activity.
Researchers use planar MEAs when they need quantitative electrical measurements from many neural sites simultaneously. The approach supports studies of neural development, disease mechanisms, pharmacological effects, and neurotoxicology. Comparing activity across recording locations can show how a treatment, condition, or developmental change alters network firing and coordination.
Recordings can provide measurements of firing patterns, coordinated activity, signal propagation, and functional connectivity across a neural network. Since multiple electrodes collect data concurrently, researchers can compare activity between sites instead of relying on one recording location. These comparisons support quantitative evaluation of network behavior under different experimental conditions.