Direct electrophysiological measurement of neuronal activity in living, breathing animals is challenging. Making such measurements on freely moving, behaving animals has been next to impossible. But recently a research group in The Netherlands and Germany that includes patch-clamp pioneer Bert Sakmann devised a contraption that can take whole-cell recordings from freely moving rats. 1 "The potential of this is huge," says Faculty of 1000 member Gerald Zamponi, of the department of physiology and biophysics at the University of Calgary.












