We are who we are through our brains. In the armamentarium of scientists who study the human brain, intracranial EEG holds a special place. Intracranial EEG refers to recordings of the brain's activity from within the skull, in immediate contact with the brain's tissue. The technique is necessary in the management of a handful of medical conditions. Thanks to the ingenuity of physicians and the selflessness of patients, it can also reveal how neuronal activity underlies normal cerebral functions. In this collection of articles, I highlight the power and versatility of intracranial EEG to reveal the neuronal underpinnings of cerebral function in humans.