Knowledge Model for Selecting and Producing Reaching Movements.

This article presents a new model of reaching control. The aim of the model is to characterize the computations underlying the selection of coordinated motion patterns among the limb segments. When a spatial target is selected, stored postures are evaluated for the contributions they can make to the task, and a special weighted average (the gaussian average) is taken of the postures to find a single target posture. Movement to the target posture is achieved without explicit planning of the trajectory. Rather, the reaching motion is driven by error correction (reducing the discrepancy between the current and target posture) shaped by inertia. The model solves the degrees-of-freedom problem for reaching. It also allows joints to compensate automatically for reduced mobility of other joints and explains established effects of practice, speed-accuracy trade-off, and kinematics. The model can be extended to other tasks and motor subsystems because of the generality of its underlying concepts.

[1]  W. Köhler The Mentality of Apes. , 2018, Nature.

[2]  P. Fitts The information capacity of the human motor system in controlling the amplitude of movement. , 1954, Journal of experimental psychology.

[3]  N. A. Bernshteĭn The co-ordination and regulation of movements , 1967 .

[4]  Steven W. Keele,et al.  Movement control in skilled motor performance. , 1968 .

[5]  Daniel E. Whitney,et al.  Resolved Motion Rate Control of Manipulators and Human Prostheses , 1969 .

[6]  R. Daniloff,et al.  Investigation of the timing of velar movements during speech. , 1971, The Journal of the Acoustical Society of America.

[7]  A. Liegeois,et al.  Automatic supervisory control of the configuration and behavior of multi-body mechanisms , 1977 .

[8]  E. Bizzi,et al.  Processes controlling arm movements in monkeys. , 1978, Science.

[9]  L. Stark,et al.  The trajectories of saccadic eye movements. , 1979, Scientific American.

[10]  Jonathan Grudin,et al.  Finger Movements in Transcription Typing , 1980 .

[11]  J. Kelso,et al.  Exploring a vibratory systems analysis of human movement production. , 1980, Journal of neurophysiology.

[12]  John M. Hollerbach,et al.  A Recursive Lagrangian Formulation of Maniputator Dynamics and a Comparative Study of Dynamics Formulation Complexity , 1980, IEEE Transactions on Systems, Man, and Cybernetics.

[13]  J. F. Soechting,et al.  Invariant characteristics of a pointing movement in man , 1981, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[14]  Allen and Rosenbloom Paul S. Newell,et al.  Mechanisms of Skill Acquisition and the Law of Practice , 1993 .

[15]  E. R. Crossman,et al.  Feedback Control of Hand-Movement and Fitts' Law , 1983, The Quarterly journal of experimental psychology. A, Human experimental psychology.

[16]  Christopher G. Atkeson,et al.  Kinematic Features of Unrestrained Arm Movements , 1984 .

[17]  Geoffrey E. Hinton,et al.  Parallel computations for controlling an arm. , 1984, Journal of motor behavior.

[18]  M. Smyth,et al.  4 – Memory for Movements , 1984 .

[19]  T. Flash,et al.  The coordination of arm movements: an experimentally confirmed mathematical model , 1985, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[20]  C. Atkeson,et al.  Kinematic features of unrestrained vertical arm movements , 1985, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[21]  J. Kelso,et al.  A qualitative dynamic analysis of reiterant speech production: phase portraits, kinematics, and dynamic modeling. , 1985, The Journal of the Acoustical Society of America.

[22]  Lloyd D. Partridge,et al.  Frogs solve Bernstein's problem , 1986, Behavioral and Brain Sciences.

[23]  F. H. C. Crick,et al.  Certain aspects of the anatomy and physiology of the cerebral cortex , 1986 .

[24]  A. P. Georgopoulos,et al.  Neuronal population coding of movement direction. , 1986, Science.

[25]  A. Gentile,et al.  Joint control strategies and hand trajectories in multijoint pointing movements. , 1986, Journal of motor behavior.

[26]  John M. Hollerbach,et al.  Workspace Effect in Arm Movement Kinematics Derived by Joint Interpolation , 1987 .

[27]  Elliot Saltzman,et al.  Skilled actions: a task-dynamic approach. , 1987, Psychological review.

[28]  E. Thelen Self organizing systems and infant motor development , 1987 .

[29]  Daniel Bullock,et al.  Neural dynamics of planned arm movements: emergent invariants and speed-accuracy properties during trajectory formation , 1988 .

[30]  R. Desimone,et al.  Behavioral neurophysiology: insights into seeing and grasping. , 1988, Science.

[31]  M T Turvey,et al.  Haptically perceiving the distances reachable with hand-held objects. , 1988, Journal of experimental psychology. Human perception and performance.

[32]  D. Sparks,et al.  Population coding of saccadic eye movements by neurons in the superior colliculus , 1988, Nature.

[33]  M Kuperstein,et al.  Neural model of adaptive hand-eye coordination for single postures. , 1988, Science.

[34]  M. Posner Foundations of cognitive science , 1989 .

[35]  C. Atkeson,et al.  Learning arm kinematics and dynamics. , 1989, Annual review of neuroscience.

[36]  R. Plamondon,et al.  Optimal Movement Selection , 1991 .

[37]  Michael I. Jordan,et al.  Forward Models: Supervised Learning with a Distal Teacher , 1992, Cogn. Sci..

[38]  David A. Rosenbaum,et al.  Plans for object manipulation , 1993 .

[39]  Michael I. Jordan Motor Learning and the Degrees of Freedom Problem , 2018, Attention and Performance XIII.

[40]  Frank Marchak,et al.  Constraints for Action Selection: Overhand Versus Underhand Grips , 2018, Attention and Performance XIII.

[41]  David E. Meyer,et al.  Speed—Accuracy Tradeoffs in Aimed Movements: Toward a Theory of Rapid Voluntary Action , 2018, Attention and Performance XIII.