  We investigate different mechanical effects which accompany the nerve pulse
propagation by using mathematical modeling. The propagation process is composed
by three connected phenomena: (i) the action potential (electrical signal)
which is usually considered when nerve pulses are discussed, (ii) the
mechanical wave propagating in the biomembrane and (iii) the pressure wave in
the axoplasm inside the axon. The main goal of the present study is to
investigate numerically how the mechanical wave is generated by the action
potential and how the characteristics of the system are reflected in the
emerging wave ensemble. %the existence and characteristics of the mechanical
wave influence the parameters of an action potential part of the wave ensemble.
The key characteristics for the coupled model system are: (i) the velocity of
the peak of the mechanical pulse is associated with the velocity of the action
potential regardless of the sound velocity value in the lipid bi-layer, (ii)
the velocity of the front and the shape of the mechanical wave depends on sound
velocity in the lipid bi-layer, (iii) the shape of the mechanical wave can have
an effect on the velocity and shape of the action potential.
