  The propagation of an action potential (AP) in a nerve fibre is accompanied
by mechanical and thermal effects. In this paper an attempt is made to build up
a mathematical model which couples the AP with a possible pressure wave (PW) in
the axoplasm and waves in the nerve fibre wall (longitudinal - LW and
transverse - TW) made of a lipid bilayer (biomembrane). A system of
differential equations includes the governing equations of single waves with
coupling forces between them. The single equations are kept as simple as
possible in order to carry out the proof of concept. An assumption based on
earlier studies is made that the coupling forces depend on changes (the
gradient, time derivative) of the voltage. In addition it is assumed that the
transverse displacement of the biomembrane can be calculated from the gradient
of the LW in the biomembrane. The computational simulation is focused to
determining the influence of possible coupling forces on the emergence of
mechanical waves from the AP. As a result, an ensemble of waves (AP, PW, LW,
TW) emerges. The further experiments should verify assumptions about coupling
forces. In the Appendix, the numerical scheme used for simulations, is
presented.
