/* non-inactivating BK-type Ca-dependent K current ** Moczydlowski and Latorre 1983, J. Gen. Physiol. 82:511-542. ** Implemented by Erik De Schutter BBF-UIA, ** with original parameters scaled for units: V, sec, mM. ** Assumes tab2Dchannel "Moczyd_KC" has a sibling Ca_concen "Ca_conc". */ float EK = -0.085 // volts function make_Moczyd_KC int xdivs = 100 int ydivs = {xdivs} float xmin, xmax, ymin, ymax xmin = -0.1; xmax = 0.05; ymin = 0.0; ymax = 0.0030 // x = Vm, y = [Ca] int i, j float x, dx, y, dy, a, b float Temp = 37 float ZFbyRT = 23210/(273.15 + Temp) if (!({exists Moczyd_KC})) create tab2Dchannel Moczyd_KC setfield Moczyd_KC Ek {EK} Gbar 0.0 \ Xindex {VOLT_C1_INDEX} Xpower 1 Ypower 0 Zpower 0 call Moczyd_KC TABCREATE X {xdivs} {xmin} {xmax} \ {ydivs} {ymin} {ymax} end dx = (xmax - xmin)/xdivs dy = (ymax - ymin)/ydivs x = xmin for (i = 0; i <= xdivs; i = i + 1) y = ymin for (j = 0; j <= ydivs; j = j + 1) a = 480*y/(y + 0.180*{exp {-0.84*ZFbyRT*x}}) b = 280/(1 + y/(0.011*{exp {-1.00*ZFbyRT*x}})) setfield Moczyd_KC X_A->table[{i}][{j}] {a} setfield Moczyd_KC X_B->table[{i}][{j}] {a + b} y = y + dy end x = x + dx end setfield Moczyd_KC X_A->calc_mode {LIN_INTERP} setfield Moczyd_KC X_B->calc_mode {LIN_INTERP} addfield Moczyd_KC addmsg1 setfield Moczyd_KC addmsg1 "../Ca_conc . CONCEN1 Ca" end