Reorganization of motor function and space representation in body machine interfaces

Maura Casadio*, Ferdinando Mussa-Ivaldi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

To control assistive devices, people with severe paralysis must reorganize their residual body motions for carrying out new functional tasks. Body-machine interfaces are a new technological tool to facilitate this reorganization. In this study, we investigated motor learning on a group of unimpaired subjects that were trained, via a body-machine interface, to solve a reaching task and to play a computer game by controlling a cursor with coordinated motions of their upper body. While reaching involves continuous motions, the computer game was based on selecting a finite set of keys. Since there are multiple body configurations corresponding to each cursor position and each game command, it is possible that different movement sets or tasks lead to the formation of different representations of the map between body configurations and cursor coordinates. In contrast, we found that subjects tended toward a single stable map. We discuss how the stability and robustness properties of the learned map are consistent with the possibility to exploit redundancy for optimizing performance in different tasks.

Original languageEnglish (US)
Title of host publication2012 4th IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2012
Pages326-331
Number of pages6
DOIs
StatePublished - Oct 18 2012
Event2012 4th IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2012 - Rome, Italy
Duration: Jun 24 2012Jun 27 2012

Publication series

NameProceedings of the IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics
ISSN (Print)2155-1774

Other

Other2012 4th IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2012
CountryItaly
CityRome
Period6/24/126/27/12

ASJC Scopus subject areas

  • Artificial Intelligence
  • Biomedical Engineering
  • Mechanical Engineering

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