Many cell types in our body have the ability to generate electrical signals, the most prominent of which include heart and brain cells. It is through the coordinated activity of these so-called electrogenic cells that the brain is capable of highly intricate information processing, and the heart can efficiently perform its function. In order to gain more profound understanding of these processes, electrophysiologists are interested in eavesdropping on the cell's electrical conversations. Microelectrode arrays (MEAs) are the method of choice since this technology can comprise up to tens of thousands of electrodes that can pick up small electrical signals, enabling parallel recording of a large number of cells.
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