1. Bereitschaftspotential preceding voluntary slow and rapid hand movements.;Becker,1976
2. Motor preparation recorded at the cortical and spinal level.;Brunia,1980
3. Voluntary finger movement in man: cerebral potentials and theory.;Deecke;Biol. Cybernet.,1976
4. Slow Brain Potentials preceding Task Performance.;Gaillard,1978
5. Cerebral potentials and the initiation of voluntary movement.;Kornhuber,1977