“…They include verbal rating scales (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15), numeric rating scales (8,16), visual analog scales (12,(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27), color analog scales (28)(29)(30)(31)(32), finger span expression (9,33,34), calibrated questionnaires (8,(35)(36)(37)(38)(39), and cortical evoked potentials (6,7,16,21,(40)(41)(42)(43). A brief description of each is presented.…”