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- W4200567029 abstract "Potassium ions significantly contribute to the resting membrane potential of cells and, therefore, extracellular K+ concentration is a crucial regulator of cell excitability. Altered concentrations of extracellular K+ affect the resting membrane potential and cellular excitability by shifting the equilibria between closed, open and inactivated states for voltage-dependent ion channels that underlie action potential initiation and conduction. Hence, it is valuable to directly measure extracellular K+ dynamics in health and diseased states. Here, we describe how to make, calibrate and use monopolar K+-selective microelectrodes. We deployed them in adult hippocampal brain slices to measure electrically evoked K+ concentration dynamics. The judicious use of such electrodes is an important part of the tool-kit needed to evaluate cellular and biophysical mechanisms that control extracellular K+ concentrations in the nervous system." @default.
- W4200567029 created "2021-12-31" @default.
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- W4200567029 date "2018-05-07" @default.
- W4200567029 modified "2023-10-12" @default.
- W4200567029 title "Making, Testing, and Using Potassium Ion Selective Microelectrodes in Tissue Slices of Adult Brain" @default.
- W4200567029 doi "https://doi.org/10.3791/57511-v" @default.
- W4200567029 hasPublicationYear "2018" @default.
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