Adjustable to allow electrode(s) to be positioned at any location on any size head. Use headband for positions F3, Fz, F4, O1, Oz, O2, etc. Use cross-strip for positions C3, Cz, C4. Cross- strip may be positioned anterior for positions FCz, etc., or posterior for positions Pz, etc. More than one cross-strip may be used to obtain combinations of electrode positions. User may cut hole(s) for desired electrode positions.