Home Reports Physics and Astronomy Content

A brand new theory of nerve pulses

next article

28.06.2005

Recent research results by two physicists from the Niels Bohr Institute at University of Copenhagen, Thomas Heimburg and Andrew D. Jackson, cast doubt on the generally accepted theory of nerve activity. Their new theory of how nerves function emphasizes the essential role that temperature and pressure play in nerves. This result can contribute to a better understanding of the effect of drugs on nerve activity and will be published in the presitigous American journal Proceedings of the National Academy of Sciences.

It is generally accepted in biology that nerve pulses are governed by so-called protein channels that open and close. According to the classic theory, electrical currents passing through open protein channels create the nerve pulses that are the basis of the brain’s activity and of its communication with muscles. This theory stands unchallenged in textbooks and earned the Nobel Prize in 1963 for its inventors, the British scientists Alan L. Hodgkin and Andrew F. Huxley.

According to Heimburg and Jackson, nerve pulses are more appropriately described as localized sound waves called ”solitons”. Perhaps nerves communicate to a larger extent with pulses of sound than with electrical signals. Scientists at the Niels Bohr Institute have been led to this new view of nerve pulses by new experimental results and by the results of a number of classical experiments not addressed by the Hodgkin-Huxley theory.

Andrew D. Jackson | Source: alphagalileo
Further information: www.nbi.dk
www.pnas.org/

next article