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Related Experiment Video

Updated: Feb 15, 2026

Gaze in Action: Head-mounted Eye Tracking of Children's Dynamic Visual Attention During Naturalistic Behavior
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Behavioral interventions for reducing head motion during MRI scans in children.

Deanna J Greene1, Jonathan M Koller2, Jacqueline M Hampton3

  • 1Washington University School of Medicine, Department of Psychiatry, United States; Washington University School of Medicine, Mallinckrodt Institute of Radiology, United States.

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Movie watching and head motion feedback reduce MRI motion artifacts in children. These behavioral interventions are effective for younger children, offering a safer alternative to sedation for improving scan quality.

Keywords:
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Area of Science:

  • Neuroimaging
  • Pediatric Neuroimaging
  • Medical Imaging

Background:

  • Head motion is a significant limitation in magnetic resonance imaging (MRI), distorting structural and functional connectivity results.
  • Sedation to mitigate motion in patients incurs costs and risks, and is not ethically viable in research settings.
  • Developing safe, non-sedative methods to reduce head motion is crucial for improving MRI quality, particularly in pediatric and neuropsychiatric populations.

Purpose of the Study:

  • To investigate the efficacy of movie viewing and real-time visual feedback in reducing head motion during MRI scans in children.
  • To determine the age-dependency of these behavioral interventions' effectiveness.
  • To assess the impact of these interventions on functional MRI data.

Main Methods:

  • Twenty-four children (5-15 years old) underwent functional MRI (fMRI) scans under various conditions: rest, movie viewing, and real-time head motion feedback.
  • Head motion was quantified during each scanning condition.
  • Functional connectivity was analyzed to assess the impact of movie viewing on fMRI data.

Main Results:

  • Both movie watching and real-time feedback significantly reduced head motion compared to rest and no feedback, respectively.
  • The benefits of these interventions were primarily observed in younger children (under 10 years); older children showed no significant improvement.
  • Movie viewing altered functional connectivity, indicating that movie-based fMRI scans differ from standard resting-state scans.

Conclusions:

  • Behavioral interventions like movie viewing and head motion feedback are effective, safe alternatives to sedation for reducing motion artifacts in pediatric MRI.
  • These methods are most beneficial for younger children, suggesting tailored approaches may be needed for older individuals.
  • While effective for motion reduction in specific groups, movie-based fMRI requires careful consideration due to its impact on functional connectivity data.