Simulation Experiments for Neural Pulses - Brain Theory from a Circuits and Systems Perspective - page 199

Experiment 6

Pulse Back Propagation

Purpose: The purpose is to demonstrate back propagation from a capacitive load.
The following code may be helpful.
itrig 0 1 dc ¼ 0 pwl(0,0,5us,10n,.2ms,5n,.21 ms,0)
x1 1 2 seg1
x2 2 3 seg1
x3 3 4 seg1
x4 4 5 seg1
x5 5 6 seg1
x6 6 7 seg1
x7 7 8 seg1
x8 8 9 seg1
x9 9 10 seg1
c1 9 0 40 pF ic ¼70 mV
Fig. A.19 simulates a reflection from a capacitive load.

• What is the capacitive load for which no reflections occur?
• If pulses are sent toward a reflective soma at a rate of 100/s, what is the rate at

which they impinge upon the soma? (Hint: 50/s, since every other one is
annihilated)