  The human brain is one of the most complex and intriguing scientific topics.
The most established theory on neuronal communication is a pure electrical
model based on the propagation of intracell cationic charges along the neurons.
Here we propose a complementary model based on two properties of brain
communication: A) The Coulomb interaction associated to the Action Potential
(AP) pulse induces a deformation of the neuron membrane which travels as an
acoustic signal, i.e.: The ions play an essential role and the electric and
acoustic signals, composing the AP, are strongly correlated. B) As brain
communication is stablished through a periodic train of AP pulses it induces a
time periodic modulation of the acoustic parameters. In this framework we
propose envisaging the neuron as a temporal electro-acoustic medium. The
temporal varying media framework could help understanding brain conundrums such
as propagation routes involved in the neuronal plasticity in the consolidation
of the memory, as well as on the generation of the signals associated to the
brain field theory.
