The Copenhagen University researchers argue that biology and medical textbooks that say nerves relay electrical impulses from the brain to the rest of the body are incorrect.“For us as physicists, this cannot be the explanation,” said Thomas Heimburg, an associate professor at the university’s Niels Bohr Institute. “The physical laws of thermodynamics tell us that electrical impulses must produce heat as they travel along the nerve, but experiments find that no such heat is produced.”
[…]
Heimburg and Jackson theorize that sound propagation is a much more likely explanation. Although sound waves usually weaken as they spread out, a medium with the right physical properties could create a special kind of sound pulse or “soliton” that can propagate without spreading or losing strength.
Scientists say nerves use sound, not electricity (CBC, via Right-reading)
(Image from WebAnatomy.)