The present invention relates to an intracerebral electrode (11) including: a narrow, elongate body (1) that is intended to be implanted in the brain of a patient, said body being provided with contact pads (2) that are electrically connected to a measuring apparatus and a mounting member (4) that is set up so as to attach said body to the head of the patient, the electrode body being hollow in order to receive a treatment instrument (6) and moreover being provided with a closed distal end (5). Said intracerebral electrode is characterized in that it comprises: a closed inner fluid flow circuit (20) that is provided inside the body (1) of the electrode up to an area near said closed distal end (5) and a connection means (7) that is located outside said body so as to connect said closed inner fluid flow circuit to an outer fluid flow circuit so that said fluid, moved through said outer fluid flow circuit, flows into said electrode through said inner fluid flow circuit so as control the temperature of said electrode (11).La présente invention concerne une électrode intracérébrale (11) comprenant un corps (1) étroit et allongé destiné à être implanté dans le cerveau dun patient, ce corps étant pourvu de plots de contact (2) reliés électriquement à un appareil de mesure, et un organe de montage (4) agencé pour fixer ledit corps au crâne du patient, le corps de lélectrode étant creux pour recevoir un instrument de traitement (6) et étant pourvu dune extrémité distale (5) fermée. Elle est caractérisée en ce quelle comporte un circuit intérieur (20) de circulation de fluide fermé ménagé à lintérieur du corps (1) de lélectrode jusquà proximité de ladite extrémité distale (5) fermée, et des moyens de connexion (7) extérieurs audit corps pour connecter ledit circuit intérieur de fluide fermé à un circuit extérieur de circulation de fluide de sorte que ledit fluide, amené à travers ledit circuit extérieur de circulation de fluide, circule à lintérieur de ladite électrode à tra
