Different Membrane Pathways Mediate Ca²⁺ Influx in Adrenal Chromaffin Cells Exposed to 150–400 ns Electric Pulses

Figure 2

Rise in evoked in chromaffin cells by nsPEF. Representative fluorescence traces together with the averaged responses for cells exposed to (a) a 150 ns pulse, (b) a 200 ns pulse, and (c) a 400 ns pulse. The -field amplitude was 3.1 kV/cm and the arrow indicates when the pulse was delivered to the cells. The plot in (d) represents the average ± SE for the maximal increase in for each pulse duration (150 ns, ; 200 ns, ; 400 ns, ). , significantly different from the 150 and 200 ns pulse.

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(b)

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(d)