The Human Performance Measurement/Basic Elements of Performance (HPM/BEP) system® (Human Performance Measurement, Inc, Arlington, TX, USA) collects motor performance data. The HPM module for hands (BEP 1) has been used by e.g. Haavisto.12 BEP 1 is a multifunction system designed to measure different aspects of the upper extremity, including visual spatial memory capacity, simple reaction time, choice reaction time, movement speed, wrist tapping and co-ordination. The test-retest reliabilities of HPM/BEP tests were described in detail by Kauranen, and the reliability of the system was acceptable.13 The BEP1 module includes visual spatial memory capacity, simple reaction time, one-choice reaction time 1 speed of movement, two-choice reaction time 1 speed of movement, index finger-tapping speed, co-ordination test, digit-symbol substitution and the Maddox Wing test.