Table A1

Parameter values for KV channels A and B

Parameter Channel A Channel B 
αX (ms−10.0319 ± 0.009 0.049 ± 0.035 
βX (ms−10.0142 ± 0.004 0.346 ± 0.043 
VX (mV) 2.3 ± 1.8 5.7 ± 3.2 
kαX (mV) 13.7 ± 0.9 24.2 ± 5 
kβX (mV) 14.1 ± 0.9 33.9 ± 5 
ΦX (ms−10.007 ± 0.003 0.0105 ± 0.003 
ϕX (ms−11 × 10−5 0.0103 ± 0.0016 
γB (ms−1 0.0021 ± 0.0021 
δB (ms−1 1 × 10-6 ± 1.4 × 10−5 
gKV (mS/cm20.86 ± 0.4 1.92 ± 0.4 
Percent contribution 0.31 ± 0.04 0.69 ± 0.06 
gleak (mS/cm20.1 0.1 
Parameter Channel A Channel B 
αX (ms−10.0319 ± 0.009 0.049 ± 0.035 
βX (ms−10.0142 ± 0.004 0.346 ± 0.043 
VX (mV) 2.3 ± 1.8 5.7 ± 3.2 
kαX (mV) 13.7 ± 0.9 24.2 ± 5 
kβX (mV) 14.1 ± 0.9 33.9 ± 5 
ΦX (ms−10.007 ± 0.003 0.0105 ± 0.003 
ϕX (ms−11 × 10−5 0.0103 ± 0.0016 
γB (ms−1 0.0021 ± 0.0021 
δB (ms−1 1 × 10-6 ± 1.4 × 10−5 
gKV (mS/cm20.86 ± 0.4 1.92 ± 0.4 
Percent contribution 0.31 ± 0.04 0.69 ± 0.06 
gleak (mS/cm20.1 0.1 

The values correspond to mean ± SEM calculated from fits to records obtained for 80-, 100-, 120-, 140-, 160-, and 180-mV pulses from nine fibers. Note that the IC state does not exist for channel A. The rate constants α and β for channels A and B had voltage dependences given by Eqs. 2 and 4, respectively. See text for specific deviations from these values.

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