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CASE REPORT
Bilateral Motor Cortex Control for Left Thumb Movement: An Incidental Finding Through Functional MRI (fMRI)
  1. Aida Rashid5,
  2. Subapriya Suppiah6,
  3. Fan Kee Hoo7,
  4. Ruziana Masiran8
  1. 5Department of Imaging, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
  2. 6Centre for Diagnostic Nuclear Imaging, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
  3. 7Neurology Unit, Department of Medicine, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
  4. 8Department of Psychiatry, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
  1. Correspondence to Dr Ruziana Masiran, ruziana78m{at}yahoo.com

Summary

We report a case of a healthy, right-hand dominant young male who was a volunteer for a pilot run of a functional MRI (fMRI) study. The fMRI was performed with a 3.0 Tesla MRI scanner using a finger tapping task-based activity. The subjects were instructed to perform flexion of the right thumb and left thumb consecutively (activation task) and neuronal activation in bilateral primary motor cortex (PMC) were observed during each task. One particular subject demonstrated bilateral PMC activation during the left-thumb movement task, instead of the expected activation of the contralateral PMC alone.

  • radiology
  • disability
  • rehabilitation medicine
  • neuroimaging
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Footnotes

  • Contributors AR and SS have performed the procedure on the subject. AR, SS and FKH have drafted the manuscript. RM has reviewed and edited the final manuscript draft.

  • Competing interests None declared.

  • Patient consent Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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