Does the oculo-manual co-ordination control system use an internal model of the arm dynamics?

The hypothesis that during self-moved target tracking, the eye-arm co-ordination control system uses an internal model of the arm dynamics was tested. The contribution of arm proprioception to this model was also assessed. Subjects (nine healthy adults and one deafferented subject) were requested to make forearm movements and visually track an arm-driven target. Unexpected changes in mechanical properties of the manipulandum were used to modify the dynamical conditions of arm movement. The smooth pursuit gain (SPG) was computed before and during the perturbation. Results showed a decrease of SPG during perturbation in control subjects only. We propose that an internal model of the arm dynamics may be used to co-ordinate eye and arm movements, and arm proprioception may contribute to this internal model.

[1]  Lamarre,et al.  Self-moved target eye tracking in control and deafferented subjects: roles of arm motor command and proprioception in arm-eye coordination. , 1996, Journal of neurophysiology.

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

[3]  P J Cordo,et al.  Kinesthetic control of a multijoint movement sequence. , 1990, Journal of neurophysiology.

[4]  Michael I. Jordan,et al.  An internal model for sensorimotor integration. , 1995, Science.

[5]  Jean-Louis Vercher,et al.  Manuo-ocular coordination in target tracking. I. A model simulating human performance , 1997, Biological Cybernetics.

[6]  Jean-Louis Vercher,et al.  Manuo-ocular coordination in target tracking. II. Comparing the model with human behavior , 1997, Biological Cybernetics.

[7]  C Ghez,et al.  Proprioceptive control of interjoint coordination. , 1995, Canadian journal of physiology and pharmacology.

[8]  L E Mays,et al.  Saccades are spatially, not retinocentrically, coded. , 1980, Science.

[9]  J. Vercher,et al.  Role of arm proprioception in calibrating the arm-eye temporal coordination , 1997, Neuroscience Letters.

[10]  F A Mussa-Ivaldi,et al.  Adaptive representation of dynamics during learning of a motor task , 1994, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[11]  J Blouin,et al.  Adaptation in visuomanual tracking depends on intact proprioception. , 1998, Journal of motor behavior.

[12]  J. Vercher,et al.  The oculomanual coordination control center takes into account the mechanical properties of the arm , 1999, Experimental Brain Research.

[13]  J R Flanagan,et al.  The Role of Internal Models in Motion Planning and Control: Evidence from Grip Force Adjustments during Movements of Hand-Held Loads , 1997, The Journal of Neuroscience.

[14]  M. Kawato,et al.  Internal representations of the motor apparatus: implications from generalization in visuomotor learning. , 1995, Journal of experimental psychology. Human perception and performance.