QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

HOME  |   SEARCH  |   ARCHIVE  |   SUBSCRIBE  |   CONTACT  |   HELP

This Article Full Text Full Text (PDF) Submit an eLetter Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (26) Citing Articles via Google Scholar Google Scholar Articles by Malfait, N. Articles by Ostry, D. J. Search for Related Content PubMed PubMed Citation Articles by Malfait, N. Articles by Ostry, D. J.

 Previous Article  |  Next Article 

The Journal of Neuroscience, November 15, 2002, 22(22):9656-9660

BRIEF COMMUNICATION
Transfer of Motor Learning across Arm Configurations

Nicole Malfait¹, Douglas M. Shiller¹, and David J. Ostry^{1, 2}

¹ McGill University, Montreal, Quebec, Canada H3A 1B1, and ² Haskins Laboratories, New Haven, Connecticut 06511

It has been suggested that the learning of new dynamics occurs in intrinsic coordinates. However, it has also been suggested that elements that encode hand velocity, and hence act in an extrinsic frame of reference, play a role in the acquisition of dynamics. To reconcile claims regarding the coordinate system involved in the representation of dynamics, we have used a procedure involving the transfer of force-field learning between two workspace locations. Subjects made point-to-point movements while holding a two-link manipulandum. Subjects were first trained to make movements in a single direction at the left of the workspace. They were then tested for transfer of learning at the right of the workspace. Two groups of subjects were defined. For the subjects in group j, movements at the left and right workspace locations were matched in terms of joint displacements. For the subjects in group h, movements in the two locations had the same hand displacements. Workspace locations were chosen such that for group j, the paths (for training and testing) that were identical in joint space were orthogonal in hand space. The subjects in group j showed good transfer between workspace locations, whereas the subjects in group h showed poor transfer. These results are in agreement with the idea that new dynamics are encoded in intrinsic coordinates and that this learning has a limited range of generalization across joint velocities.

Key words: arm movement; motor learning; dynamics; force field; coordinate system; generalization

---

Copyright © 2002 Society for Neuroscience  0270-6474/02/22229656-05$05.00/0

This article has been cited by other articles:

				J. Kluzik, J. Diedrichsen, R. Shadmehr, and A. J. Bastian Reach Adaptation: What Determines Whether We Learn an Internal Model of the Tool or Adapt the Model of Our Arm? J Neurophysiol, September 1, 2008; 100(3): 1455 - 1464. [Abstract] [Full Text] [PDF]

				S. Tremblay, G. Houle, and D. J. Ostry Specificity of Speech Motor Learning J. Neurosci., March 5, 2008; 28(10): 2426 - 2434. [Abstract] [Full Text] [PDF]

				A. A. G. Mattar and D. J. Ostry Modifiability of Generalization in Dynamics Learning J Neurophysiol, December 1, 2007; 98(6): 3321 - 3329. [Abstract] [Full Text] [PDF]

				L. Dipietro, H. I. Krebs, S. E. Fasoli, B. T. Volpe, J. Stein, C. Bever, and N. Hogan Changing Motor Synergies in Chronic Stroke J Neurophysiol, August 1, 2007; 98(2): 757 - 768. [Abstract] [Full Text] [PDF]

				N. Malfait, P. L. Gribble, and D. J. Ostry Generalization of Motor Learning Based on Multiple Field Exposures and Local Adaptation J Neurophysiol, June 1, 2005; 93(6): 3327 - 3338. [Abstract] [Full Text] [PDF]

				S. K. Wainscott, O. Donchin, and R. Shadmehr Internal Models and Contextual Cues: Encoding Serial Order and Direction of Movement J Neurophysiol, February 1, 2005; 93(2): 786 - 800. [Abstract] [Full Text] [PDF]

				N. Malfait and D. J. Ostry Is Interlimb Transfer of Force-Field Adaptation a Cognitive Response to the Sudden Introduction of Load? J. Neurosci., September 15, 2004; 24(37): 8084 - 8089. [Abstract] [Full Text] [PDF]

				D. B. Debicki and P. L. Gribble Inter-Joint Coupling Strategy During Adaptation to Novel Viscous Loads in Human Arm Movement J Neurophysiol, August 1, 2004; 92(2): 754 - 765. [Abstract] [Full Text] [PDF]

				J. Wang and R. L. Sainburg Interlimb Transfer of Novel Inertial Dynamics Is Asymmetrical J Neurophysiol, July 1, 2004; 92(1): 349 - 360. [Abstract] [Full Text] [PDF]

				B. K. Barry and R. G. Carson The Consequences of Resistance Training for Movement Control in Older Adults J. Gerontol. A Biol. Sci. Med. Sci., July 1, 2004; 59(7): M730 - M754. [Abstract] [Full Text] [PDF]

				C. D. Mah and F. A. Mussa-Ivaldi Generalization of Object Manipulation Skills Learned without Limb Motion J. Neurosci., June 15, 2003; 23(12): 4821 - 4825. [Abstract] [Full Text] [PDF]

Home  |   Search  |   Archive  |   Subscribe  |   Contact  |   Help