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Phantom haptic device upgrade for use in fMRI.

Ales Hribar1, Blaz Koritnik, Marko Munih

  • 1Faculty of Electrical Engineering, Trzaska, Ljubljana, Slovenia. alesh@robo.fe.uni-lj.si

Medical & Biological Engineering & Computing
|March 6, 2009
PubMed
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Researchers upgraded a haptic device for functional magnetic resonance imaging (fMRI) studies. This new fMRI-compatible haptic system enables the investigation of brain activation during upper limb movements.

Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Medical Physics

Background:

  • Haptic devices offer valuable sensory feedback for human-computer interaction.
  • Integrating haptic technology with functional magnetic resonance imaging (fMRI) presents significant technical challenges due to strong magnetic fields.
  • Previous research has explored limited applications of haptics in MRI environments.

Purpose of the Study:

  • To adapt and validate a Phantom Premium 1.5 haptic device for safe and effective use within an fMRI environment.
  • To develop a mechanical extension enabling remote operation of the haptic device away from the scanner's magnetic field.
  • To investigate human brain activation patterns during motor tasks using this novel fMRI-compatible haptic platform.

Main Methods:

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  • A Phantom Premium 1.5 haptic device was modified with a specialized mechanical extension for spatial separation from the fMRI scanner.
  • Electromagnetic compatibility (EMC) testing was performed to ensure the upgraded system did not interfere with fMRI data acquisition.
  • A virtual reality reaching task was implemented to elicit controlled upper limb movements for neuroimaging.

    • Main Results:

    • The upgraded haptic system demonstrated electromagnetic compatibility with the fMRI scanner.
    • The mechanical extension successfully allowed the haptic device to operate at a safe distance, preserving its functionality.
    • Preliminary neurophysiological data were collected, showing brain activation patterns during the virtual reaching task.

    Conclusions:

    • The developed fMRI-compatible haptic platform is suitable for studying brain activity during motor tasks.
    • This technological advancement opens new avenues for research in motor control and neurorehabilitation within an MRI setting.
    • Further neurophysiological studies are ongoing to fully elucidate brain mechanisms underlying movement.