title: Historical overview.
authors.affiliation: Department of Neurology, Heinrich-Heine-Universität Düsseldorf, Germany.
authors.forename: H J
authors.initials: HJ
authors.lastname: Freund
mesh_terms: D000818:Animals; D004558:Electric Stimulation; D004594:Electrophysiology; D049673:History, 20th Century; D006801:Humans; D009044:Motor Cortex / Q000033:anatomy & histology / Q000502:physiology*; D009462:Neurology / Q000266:history*; D013003:Somatosensory Cortex / Q000033:anatomy & histology / Q000502:physiology*; D009626:Terminology as Topic