1. Asanuma H, Zarzecki P, Jankowska E, Hongo T, Marcus S (1979) Projection of individual pyramidal tract neurons to lumbar motor nuclei of the monkey. Exp Brain Res 34:73–89.
2. Bouisset S (1973) EMG and muscle force in normal motor activities. In: Desmedt JE (ed) New developments in electromyography and clinical neurophysiology. Karger, Basel, p 547–583.
3. Bouisset S, Maton B (1972) The quantitative relation between surface and intramuscular electromyographic activities for voluntary movement. Amer J Phys Med 51:285–295.
4. Evarts EV (1967) Representation of movements and muscles by pyramidal tract neurons of the precentral motor cortex. In: Yahr MD, Purpura DP (eds). Neurophysiological basis of normal and abnormal motor activities. Raven, New York, p 215–251.
5. Georgopoulos AP, Kalaska JF, Massey JT (1981) Spatial trajectories and reaction times of aimed movements: effect of practice, uncertainty, and change in target location. J Neurophysiol 46:725–743.