Question 1.1 The transmembrane potential is measured at two points along a nerve axons (-5 cm and 5 cm). Sketch the measured transmembrane potential waveform for the following scenarios (assume a reasonable conduction velocity but justify your assumptions): a) A stimulus is provided at -40 cm b) A stimulus is provided at 40 cm c) A stimulus is provided at 0 cm d) A stimulus is provided at -40 cm and 40 cm simultaneously e) A stimulus is provided at -40 cm, 40 cm, and 0 cm simultaneously For each scenario sketch Vm1 and V on the same axes. m2 m2 -40 cm 40 cm -5 cm 5 сm

Assume the conduction velocity is $5 \raisebox{1ex}{$m$}\!\left/ \!\raisebox{-1ex}{$s$}\right.=0.5 \raisebox{1ex}{$cm$}\!\left/ \!\raisebox{-1ex}{$ms$}\right.$. 

On $x$-axis take the time in milliseconds.

In every situation stimulation tine will be zero millisecond.

 On $y$-axis take the potential in $mV$.

Resting membrane potential is $-70 mV$.

The potential change is recorded on given point $-5 cm$ and $5 cm$ as $V{m}_1$ and $V{m}_2$ waveforms respectively. All $V{m}_1$ waveforms are in blue and $V{m}_2$ waveforms are in green.

For every stimulus $V{m}_1$ and $V{m}_2$ would be Action potential in which potential goes to about $+35 mV$ and back to $-70 mV$ in $3$ to $5 ms$.