To process information in our brains, nerve cells produce brief electrical impulses, called action potentials, triggered from one highly specialized region. Research from the Netherlands Institute for Neuroscience, together with researchers from Heidelberg University and the University of Göttingen in Germany, now show that the electrical trigger sites surprisingly change with experience; they are either becoming smaller with increasing number of experiences and, vice versa, they grow larger when less input arrives in the brain. The results were published in Nature Communications.