• Publications
  • Influence
The coordination of arm movements: an experimentally confirmed mathematical model
  • T. Flash, N. Hogan
  • Engineering
    The Journal of neuroscience : the official…
  • 1 July 1985
A mathematical model is formulated which is shown to predict both the qualitative features and the quantitative details observed experimentally in planar, multijoint arm movements, and is successful only when formulated in terms of the motion of the hand in extracorporal space.
Computational approaches to motor control
Dynamic interactions between limb segments during planar arm movement
The significance of the individual interaction forces during reaching movements in a horizontal plane involving only the shoulder and elbow joints has been assessed and trajectory formation strategies which simplify the dynamics computation are presented.
Minimum-jerk, two-thirds power law, and isochrony: converging approaches to movement planning.
Data on the drawing of complex two-dimensional trajectories were used to test whether the covariations of the kinematic and geometrical parameters of the movement formalized by the two-thirds power law and by the isochrony principle can be derived from the minimum-jerk model hypothesis.
Multiple shifts in the representation of a motor sequence during the acquisition of skilled performance
The results indicate multiple time-dependent shifts in the representation of motor experience during the acquisition of skilled performance as well as the passage of time.
Motor primitives in vertebrates and invertebrates
A Computational Model for Redundant Human Three-Dimensional Pointing Movements: Integration of Independent Spatial and Temporal Motor Plans Simplifies Movement Dynamics
This study presents a computational model of 3D movements for an arm with four degrees of freedom based on the assumption that optimization principles are separately applied at the geometric and temporal levels of control and suggests that geodesics are an emergent property of the motor system through the exploration of dynamical space.
The control of hand equilibrium trajectories in multi-joint arm movements
  • T. Flash
  • Biology
    Biological Cybernetics
  • 1 November 1987
The success of the predicted behavior in capturing both the qualitative features and the quantitative kinematic details of the measured movements supports the equilibrium trajectory hypothesis and the control strategy suggested here may allow the motor system to avoid some of the complicated computational problems associated with multi-joint arm movements.
Arm Trajectory Modifications During Reaching Towards Visual Targets
  • T. Flash, E. Henis
  • Psychology, Biology
    Journal of Cognitive Neuroscience
  • 1 July 1991
This paper studies the question of how an aimed arm movement is modified in response to a sudden change in target location occurring during the reaction or movement time and finds that the observations can be well accounted for by a different movement modification scheme.