Latash M L, Gutman S R, Gottlieb G L
Department of Physical Medicine and Rehabilitation, Rush Medical College, Chicago, IL 60612.
Biol Cybern. 1991;65(5):401-6. doi: 10.1007/BF00216974.
We assume that there is an upper limit for the rate of change of controlled variables in the motor control system. Superposition of two single-joint motor programs can lead to a distortion of their simple algebraic summation similar to relativistic Lorenz transformations. Experiments were carried out with the subjects performing fast oscillatory elbow movements on the background of a smooth elbow flexion. Changes in the period of oscillations during the smooth movement were used as index of time transformations. Statistically 5%-7% changes in the period were observed for each of the subjects corresponding to the predictions of the model.
