We will tell you. Where brain functions are localized close to the data stores, the chemical paths and links that constitute memory and the potential for thought, these functional mother lodes cannot be mined without the greased lightning that is the communication substrata. We are not speaking here of synaptic junctions, the ends of one brain cell's dendrites touching another. We are speaking here not of chemistry, but of a communication method not understood by your scientists, as it cannot be pressed between glass plates and peeked at under a microscope, or placed in a vial of chemicals to test its nature. It requires a living brain to express itself, and beyond the difference in frequency, its nature is unknown to your scientists.
Brain waves are but a symptom of the process, whereby the brain, as an organ, hums to itself.
Think of the choir, where all warm up with the same musical scales - synchronicity. But the true musical potential is where the choir, open throated, strikes harmonious chords. This music, as we have said, is not chemical but the result of chemical interactions, which result in what you may term a variation on electrical energy. Electrons are not the only particles involved in electrical current, which is much over simplified in man's theories. There are hundreds of sub-atomic particles that constitute electric current.