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. 1998 Nov 15;513(Pt 1):19–31. doi: 10.1111/j.1469-7793.1998.019by.x

Figure 9. Distributions of open times within bursts and of the number of openings per burst.

Figure 9

The distribution of open times within bursts with three concentrations of FMRFamide (top, 1534 openings, 0.3 μm; middle, 2343 openings, 3 μm; bottom, 610 openings, 10 μm) is shown in A. The critical interburst closed times were 13.79 ms for 0.3 μm, 1.94 ms for 3 μm, and 0.35 ms for 10 μm FMRFamide. The distribution was fitted with the sum of two exponential components (continuous lines) with parameters of (mean time constant (relative area)): 0.40 ms (59 %) and 2.60 ms (41 %) for 0.3 μm FMRFamide, 0.18 ms (30 %) and 4.66 ms (70 %) for 3.0 μm FMRFamide, and 0.29 ms (5 %) and 5.07 ms (95 %) for 10 μm FMRFamide. The membrane potential was −80 mV and the recording was low-pass filtered at 2 kHz (−3 dB). The distribution (filled bars) of the number of openings per burst at three concentrations of FMRFamide (top, 0.3 μm; middle, 3 μm; bottom, 10 μm) is shown in B. The distribution was fitted with the sum of two geometrics (open bars) with parameters of (mean number (relative area)): 1.4 (47 %) and 2.9 (53 %) for 0.3 μm FMRFamide, 1.1 (27 %) and 2.7 (73 %) for 3.0 μm FMRFamide, and 1.0 (8 %) and 2.9 (92 %) for 10 μm FMRFamide.