Last updated on April 18, 2014 at 16:41 EDT

Latest Harold Zakon Stories

2011-05-18 00:10:16

An essential component of animal nervous systems"”sodium channels"”evolved prior to the evolution of those systems, researchers from The University of Texas at Austin have discovered. "The first nervous systems appeared in jellyfish-like animals six hundred million years ago or so," says Harold Zakon, professor of neurobiology, "and it was thought that sodium channels evolved around that time. We have now discovered that sodium channels were around well before nervous systems...

2009-09-29 12:41:35

Just as people plug in to computers, smart phones and electric outlets to communicate, electric fish communicate by quickly plugging special channels into their cells to generate electrical impulses, University of Texas at Austin researchers have discovered. The fish generate electric fields to navigate, fight and attract mates in murky streams and rivers throughout Central and South America. They do so at night, while trying to avoid predators such as catfish that sense the electric fields....