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Related Experiment Video

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A low cost fMRI-compatible tracking system using the Nintendo Wii remote.

Cristián Modroño1, Antonio F Rodríguez-Hernández, Francisco Marcano

  • 1Department of Physiology, School of Medicine, University of La Laguna, 38071 Tenerife, Spain. cmodrono@ull.es

Journal of Neuroscience Methods
|June 7, 2011
PubMed
Summary

This study introduces a low-cost hand tracking system for functional magnetic resonance imaging (fMRI) experiments. The system enables precise movement capture within the MRI environment, aiding kinematic analysis and visuomotor task research.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Medical Imaging

Background:

  • Functional magnetic resonance imaging (fMRI) requires methods to track subject movements for kinematic analysis.
  • Existing tracking systems can be expensive or incompatible with MRI environments.

Purpose of the Study:

  • To develop an inexpensive and effective hand tracking system for use in high-field MRI.
  • To demonstrate the system's utility in capturing hand movements during a visuomotor task within an MRI scanner.

Main Methods:

  • Utilized a single light-emitting diode (LED) placed in the MRI magnet room.
  • Employed a Nintendo Wii remote in the control room to detect the LED signal.
  • Tested the system with a virtual ball and racket game in a 3 Tesla MRI scanner.

Main Results:

  • Successfully captured high spatial and temporal resolution data of a moving point (hand-held LED).
  • Observed significant activation in occipital, frontal, parietal, and temporal brain regions during the visuomotor task.
  • Confirmed findings align with previous research on related visuomotor tasks.

Conclusions:

  • The developed system is inexpensive, easy to implement, and operates without causing significant artifacts in fMRI images.
  • Ideal for basic and clinical fMRI research requiring tracking of limbs, fingers, or other objects.
  • Facilitates detailed kinematic analysis and understanding of visuomotor control in MRI studies.