Electrical brain signal's challenged

A group of physicists is claiming that neurons transfer sound waves (solitons) to be specific and not electrical impulses. This would be really neat since the conditions for a soliton to propagate are very sensitive and so it may be able to disrupt brain activity by targeting the conditions of the cell. I would think this is quite a finding since current explanation is very different. I guess that would mean that the fields we use to interact with the brain don't interact with the signal but its medium.