Now, their latest study, the Wuhan researchers, led by professor Dai Jiapei suggested two years ago that neurons, the nerve cells in the brain that transmit information, emit extremely "lights," photons, stimulated by a chemical called glutamate and detectable only with the most sensitive equipment, but capable of transmission along brain fibers and circuits. The key finding is that human brains are able to create information-relaying photons using much less energy, enabling homo sapiens to operate more speedily and efficiently than brains of other species.
"If you look at the entire physical cosmos, our brains are a tiny, tiny part of it," said Penrose. "But they're the most perfectly organized part. Compared to the complexity of a brain, a galaxy is just an inert lump."
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