Question: what can the communication of nerves do to help benefit humans and our understanding of nerves...?

Helen Tunbridge answered on 18 Jun 2013:

Well, almost everything humans do in their every day life is caused or affected by nerves! Our breathing, heart rate, movement, thought, digestion and many many other functions are all controlled and kept normal by nerves. Our nervous system is divided into two systems which have opposite functions.
There is the sympathetic nervous system, which is involved in the fight or flight response which you may have heard of. Activation of these nerves causes things like heavier or faster breathing, your heart beating faster and harder, and feeling rushed or nervous because it causes the release of adrenaline.
The opposing one is the parasympathetic nervous system, which slows down your heart and breathing, and aids things like digestion.

Of course there’s also all the millions of nerves in your brain that allow you to read this answer, think about it and understand it, and to come up with ideas, feel emotions, communicate and do all the things that make animals and humans different from bacteria etc!!