Neuron is the cell whose function in live organisms is equvivalent to the neutron particle function in matter atom. Neutron role in matter atoms is to establish and keep atom charge neutrality ( all atoms in periodic table of elements are neutral ). Charge neutrality means that subject which we analize exebite neither posetive nor negative charge ( proton and electron are posetively and negatively charged elementar particles, respectivaly ). Further on, all compaunds and multiple atom combinations in nature are also neutral. Single cell organisms exebite charge neutrality, too.They realese their neutrality by the rna- dna function. Multycell organisms also present themselve to the outer space as neutral. That neutrality is accomplished by neuron function.