IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v417y2002i6892d10.1038_nature00834.html
   My bibliography  Save this article

Overlap of internal models in motor cortex for mechanical loads during reaching

Author

Listed:
  • Paul L. Gribble

    (The University of Western Ontario)

  • Stephen H. Scott

    (Queen's University)

Abstract

A hallmark of the human motor system is its ability to adapt motor patterns for different environmental conditions, such as when a skilled ice-hockey player accurately shoots a puck with or without protective equipment. Each object (stick, shoulder pad, elbow pad) imparts a distinct load upon the limb, and a key problem in motor neuroscience is to understand how the brain controls movement for different mechanical contexts1,2. We addressed this issue by training non-human primates to make reaching movements with and without viscous loads applied to the shoulder and/or elbow joints, and then examined neural representations in primary motor cortex (MI) for each load condition. Even though the shoulder and elbow loads are mechanically independent, we found that some neurons responded to both of these single-joint loads. Furthermore, changes in activity of individual neurons during multi-joint loads could be predicted from their response to subordinate single-joint loads. These findings suggest that neural representations of different mechanical contexts in MI are organized in a highly structured manner that may provide a neural basis for how complex motor behaviour is learned from simpler motor tasks.

Suggested Citation

  • Paul L. Gribble & Stephen H. Scott, 2002. "Overlap of internal models in motor cortex for mechanical loads during reaching," Nature, Nature, vol. 417(6892), pages 938-941, June.
  • Handle: RePEc:nat:nature:v:417:y:2002:i:6892:d:10.1038_nature00834
    DOI: 10.1038/nature00834
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature00834
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.

    File URL: https://libkey.io/10.1038/nature00834?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Roberta Ronchi & Patrice Revol & Masahiro Katayama & Yves Rossetti & Alessandro Farnè, 2011. "Seeing Your Error Alters My Pointing: Observing Systematic Pointing Errors Induces Sensori-Motor After-Effects," PLOS ONE, Public Library of Science, vol. 6(6), pages 1-9, June.
    2. Todd E Hudson & Laurence T Maloney & Michael S Landy, 2008. "Optimal Compensation for Temporal Uncertainty in Movement Planning," PLOS Computational Biology, Public Library of Science, vol. 4(7), pages 1-9, July.
    3. Joshua G A Cashaback & Christopher K Lao & Dimitrios J Palidis & Susan K Coltman & Heather R McGregor & Paul L Gribble, 2019. "The gradient of the reinforcement landscape influences sensorimotor learning," PLOS Computational Biology, Public Library of Science, vol. 15(3), pages 1-27, March.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:417:y:2002:i:6892:d:10.1038_nature00834. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.