ABSTRACT
This chapter describes anticipatory motor sequences entrained by a directional adjustment during normal locomotion. The main locomotion parameters fell in the range of those measured during linear walking, suggesting that the basic locomotor pattern is only slightly modulated in order to achieve the needed curvature. The linear and angular velocities of subjects depended on the curvature of the circle. A high correlation was found between linear speed and step-length while the correlation between linear speed and stepping rate was much lower. The stepping length was calculated by dividing the linear speed by the stepping rate. A consistent linear relationship was found, across subjects, between the stepping rate and the head yawing rate, indicating that the latter is exactly the half of the former. Head oscillations were always smaller than the synchronous oscillations of walking direction.
