As far as interstellar communication is concerned, telepathic information sent via electromagnetic waves is often not desirable because even sent to the nearest star, electromagnetic signal will take four years to arrive there! That is the reason why we normally think of other faster means, such as quantum entanglement of minds. However, as we will see, electromagnetic Telepathy is easier to justify than quantum entanglement of minds. This is the reason I have sought to find a way in which minds can communicate over vast distances by use of electromagnetic waves. As for the undesirable delay in time due to vast distances, we can see if we can search for a realm with an appropriate 'luminiferous aether' in which light travels far much faster than in the usual realm. We then send (or receive) interstellar telepathic message by first being connected to such realms.
Now the question really is not whether or not the brain sends electromagnetic signals. Rather, the question is how far do those signals go before the signal to noise ratio becomes too small for the receiving brain to extract signal from those noises. Think of some child whispering in a classroom full of noise. If the classroom was totally silent, someone could hear the whisper from one corner of the classroom. However, in a noisy class one has to shout so that as heard from a given corner he is somehow louder than the noises from the rest of the class. Same is the case with someone trying to send a faint electromagnetic signal in a noisy universe.
It is well known that the brain works by sending signals along neurones. Also the neurones works by sending electric signals along their axons. As the electrical signal moves along the neurone there is a constant change in voltage since the signal is actually a pulse of voltage moving along the axon. Such a voltage change automaticallycreats a corresponding electromagnetic wave as a matter of fact. It is in accordance to the laws of electrodynamics. So there are indeed waves emanating from a thinking brain. The sum total of such waves from various neurones in the brain will encode what that person is thinking in much the same way the light waves in a laser encodes an hollographic image. If you like, you can say that the telepathic message is 'hollographic in the sum of waves emanating from all the neurones'. As in hologram then, the telepathic message needs some way of decoding, and this might be one of the challenges that makes telepathy not obvious.
The other question that remains is how the brain might deal with noises commingled from numerous electromagnetic waves throughout the univers. It is here where I would like to draw your attention to the LIGO project that is said to be used to detect the so called gravitational waves. It is said that such a wave from a distant star causes the arm of a LIGO device to shorten by a thaosandth of the diameter of a proton! It is unbelievable to say that these scientists could tell the signal from the noise for such a weak signal. If you do some calculations, you will note that is someone were to whisper from a distance of two light years away, then such a sound will cause a membrane here on earth to vibrate to a friend over a distance of the thaosandth of the proton diameter. I other words what the scientists in the LIGO project are telling us is that they have made a device that is so sensitive that it can detect someone whispering from two light years away!
However, I don't think the brain will isolate the noise the same way scientists at LIGO does that. I think that the brain uses the fact that what we call 'noise' may not be noise at all! They are just signals that we are not able to decode and so appears to us as noises. But I think that the living things have all the codes! What makes me think so is the manifestation of quantum states in living organisms. Scientists have found evidence of, for instance, plants using quantum mechanics in photosynthesis. This so called 'quantum photosynthesis' does not make much sense to a quantum physicist since living things are supposed to be too hot and too noisy for quantum effects to manifest. My explanation is that what appears to be 'noise' to us may not be so to every biological organism. Heat, for instance, may not be 'random giggling of particles'. It is possibly a giggle that follows some pattern that is not so easy to decode.
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