Course Solutions Uncategorized (Solved) : 3c 10 Pts Giant Nerve Fiber Arranged External Internal Electrodes Effectively Short Circui Q33114279 . . . .

(Solved) : 3c 10 Pts Giant Nerve Fiber Arranged External Internal Electrodes Effectively Short Circui Q33114279 . . . .

 

[3.C] (10 pts) A giant nerve fiber is arranged with external and internal electrodes that effectively short circuit the resistance of the outer and inner conductors (Figure 1.C). These electrodes eliminate spatial variations of the voltages and currents (a space clamp). Assume that Vm (t) = for t < 0 and that the changes in Vrn(t) from the resting value,W, are small enough that the nerve membrane can be represented as a circuit with constant capacitance Cm, constant resistance Rm, and resting potential Im(t) Vm(t) Source Source Fig. 1.C (a) Assume that for t < 0, V,n(t) = and that the electrodes are connected to a current source such that lm (t) = lu(t). Determine VmCt) for t >0. (b) If the source is an ideal voltage source such that Vn(t) = W + Vu(t), determine the membrane current Im(t)

[3.C]

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