Scientists at Trinity College Dublin have hypothesized that the human brain can use quantum computing to work. In particular, the phenomenon of consciousness can be explained in this way. The study was published in the Journal of Physics Communications.
According to the co-author of the work, Dr. Christian Kerskens (Christian Kerskens), a leading physicist at the Institute of Neuroscience at Trinity College, this idea arose from the researchers during their experiments, which were carried out to prove quantum gravity.
During these experiments, known quantum systems interacted with unknown ones. If a known system had quantum entanglement, then the unknown system must have been quantum as well. This approach allows one to determine the parameters of those systems about which nothing is known.
In the experiment, using the MRI machine (magnetic resonance imaging), the spins of protons in the cerebral fluid were measured. They acted as a known system. During the study, it turned out that the MRI machine captures signals similar to those associated with the rhythm of the heart. But such signals are usually tracked using an EEG (electroencephalogram), they are not visible on the MRI diagram.
Scientists believe that they were able to observe such an effect due to quantum entanglement. And from this they concluded that the brain works as a quantum system. It is also noted that these functions correlated with the functioning of short-term memory and consciousness, so there is a chance that consciousness works precisely on quantum effects.
By the way, a similar idea was expressed back in 1989 by Roger Penrose.