▎ 摘　　要

NOVELTY - Polymeric composition (1) comprises a polymer matrix (2) in which are dispersed carbon nanotubes (3) and adsorbent elements (4) comprising activated carbon particles and graphene nanoplates. USE - The polymeric composition is useful in electrode and electrical circuit for non-invasive measurement of biological electrical signals, and in device for measuring brain waves (all claimed). ADVANTAGE - The polymeric composition: has a hardness of 10-80 Shore A; utilizes adsorbent elements that have a surface area greater than 300 m2/g, preferably greater than 1000 m2/g (claimed), thus capable of adsorbing a large amount of ions present on the surface of living tissue that is in contact with the polymeric composition; and allows for non-invasive measurement of biological electrical signals. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) an electrode (6) for non-invasive measurement of biological electrical signals, comprising the polymeric composition capable of coming into contact with living tissue; (2) an electrical circuit for the non-invasive measurement of biological electrical signals, comprising the electrode comprising at least one electrical conductor in contact with the polymeric composition or a conductive polymer, and a processing unit for processing the signals measured by the electrode connected to the electrical conductor of the electrode; (3) a device for measuring brain waves adapted to be carried by a person, comprising a support element capable of at least partially surrounding a head of the person so as to be held there, on which is mounted the electrode, so that the polymeric composition of the electrode is able to come into contact with a skin of the person; and (4) use of the adsorbent elements to increase the ionic adsorption of the polymeric composition. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the electrode. Polymeric composition (1) Polymer matrix (2) Carbon nanotubes (3) Adsorbent elements (4) Electrode (6)