What is the potential along the axon of the neuron as a function of r, i.e. the distance from the origin, for the three cases?

a) What is the potential along the axon of the neuron as a function of r, i.e. the distance from the origin, for the three cases? Give your answer as a function of the current 10 and the medium conductivity cr.

b) Which of the three students has a better chance of triggering an action potential? Justify your answer

c) Plot the electric potential along the axon as a function of r and estimate graphically, where the action potential will be triggered. Justify your answer. guess work will not attract marks.

a) At time t=0. the depolarization wave is at location zo=1mm. as shown in
Figure Q14. At this moment the source +lc, and of the equivalent dipole
are at location z=0.9mm and z=1.1mm. respectively. What will be the voltage recorded by the probe if l3=1.2mA?
b) Draw a qualitative plot of the voltage measured by the probe as a function of the position of the action potential as it travels down the fibre. Hint You may want to consider what the voltage would be when the front of the depolarization wave is at various Z values (e.g. z 1. 0.5. 0. -0.5 -1 --/).

c) If instead of placing the refence electrode at infinity the reference electrode is placed next to the probe electrode. what would be the voltage difference recorded in the following 3 cases? Draw a qualitative plot of the voltage difference between the two electrodes as a function of the position of the action potential as it travels down the fibre.