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Visualization of Dynamic Sub-microsecond Changes in Membrane Potential
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DOI：10.1016/j.bpj.2018.11.3129.png)
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Abstract
En 中文
Direct observation of rapid membrane potential changes is critical to understand how complex neurological systems function. This knowledge is especially important when stimulation is achieved through an external stimulus meant to mimic a naturally occurring process. To enable exploration of this dynamic space, we developed an all-optical method for observing rapid changes in membrane potential at temporal resolutions of similar to 25 ns. By applying a single 600-ns electric pulse, we observed sub-microsecond, continuous membrane charging and discharging dynamics. Close agreement between the acquired results and an analytical membrane-charging model validates the utility of this technique. This tool will deepen our understanding of the role of membrane potential dynamics in the regulation of many biological and chemical processes within living systems.
Keywords:
ELECTRIC PULSES
VOLTAGE
ELECTROPORATION
PERMEABILIZATION
FIELDS
CELLS
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