More on neurons and related subject

signal transduction - the cascading of signals is very relevant to electricity outside of the brain - such as in electronic or robotic things - and can be the beginning of something very interesting, even on a small simulation in a program type of beginning.

reference: neural net

more interesting: Neurons - and synaptic transmission - the way photoreceptors process information about light and colour in the environment transmitting light in its intensity and wavelength to something that is recognized in a dual process (rods and cones) and reformulated into information about the environment in the mindboggling miracle of the human (or animal) eye.