docs: def get_electrode_node(self, electrode):
          """
          For a given electrode (e.g. from a config.dat file), return the true
          node number as in self.nodes['sorted']
          """
          elec_node_raw = int(self.electrodes[electrode - 1][0])
          if(self.header['cutmck']):
              elec_node = self.nodes['rev_cutmck_index'][elec_node_raw]
          else:
              elec_node = elec_node_raw - 1
          return int(elec_node)