How the Brain Balances Excitation and Inhibition | Quanta Magazine

Introduction From Santiago Ramón y Cajal’s hand came branches and whorls, spines and webs. Now-famous drawings by the neuroanatomist in the late 19th and early 20th centuries showed, for the first time, the distinctiveness and diversity of the fundamental building blocks of the mammalian brain that we call neurons. In the century or so since, his successors have painstakingly worked to count, track, identify, label and categorize these cells. There is now a dizzying number of ways to put...