Spatial filtering of electroencephalography reduces artifacts and enhances signals related to spinal cord stimulation (SCS) - Büntjen, Lars; Vicheva, Petya; Chander, Bankim Subhash; Beccard, Sophie-Antoinette; Coutts, Christopher; Azañón, Elena; Stenner, Max-Philipp; Deliano, Matthias (Neuromodulation, 2021)