Brain-machineinterfaceshaveinrecentyearsallowedparalyzedpatientstocontrolroboticarms,computercursors,andexoskeletonssimplybythinkingaboutit.Theseinterfacesrequireelectrodesthataresurgicallyimplantedintoorontopofthebraintoreadelectricalsignalsfromfiringneurons.Butanov-