A theoretical framework for understanding movement preparation is proposed. Movement
parameters are represented by activation fields, distributions of activation defined over …

There have recently been a number of advances in our knowledge of the organization of
complex, multi-joint movements. Promising starts have been made in our understanding of …

Handedness is a prominent behavioral phenomenon that emerges from asymmetrical
neural organization of human motor systems. However, the aspects of motor performance …

This study examined the variability in movement end points in a task in which human
subjects reached to targets in different locations on a horizontal surface. The primary …

1. The aim of this study was to demonstrate that goal-directed pointing movements, executed
at normal speed to a small visual target, but without vision of the movement, do not rely on …

This study examines the source of directiondependent errors in movement extent made by
human subjects in a reaching task. As in the preceding study, subjects were to move a …

We present a model for several early stages of the sensorimotor transformations involved in
targeted arm movement. In psychophysical experiments, human subjects pointed to the …

We have previously demonstrated that, in preparing themselves to aim voluntary impulses of
isometric elbow force to unpredictable targets, subjects selected default values for amplitude …

Santello, Marco and John F. Soechting. Gradual molding of the hand to object contours. J.
Neurophysiol. 79: 1307–1320, 1998. Subjects were asked to reach to and to grasp 15 …

Extensive behavioral evidence suggests that the direction and amplitude of reaching
movements are planned as two independent parameters by the motor system. However …