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Related Experiment Videos

Frontal lobe ataxia

J B Terry1, R N Rosenberg

  • 1Department of Neurology, University of Texas, Southwestern Medical Center at Dallas, TX 75235-9036, USA.

Surgical Neurology
|December 1, 1995
PubMed
Summary
This summary is machine-generated.

Frontal lobe ataxia, a rare condition, can cause gait impairment due to damage to the frontopontocerebellar tract. This case study uses MRI and PET scans to define the syndrome, supporting its existence.

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Area of Science:

  • Neuroscience
  • Neurology
  • Radiology

Background:

  • Gait abnormalities are typically linked to cerebellar disorders.
  • Frontal lobe disease can also cause gait difficulties, but the mechanism is less understood.
  • The frontopontocerebellar tract (Arnold's bundle) is implicated in frontal lobe ataxia.

Observation:

  • A patient presented with progressive gait impairment and dysarthria due to a large bilateral medial orbital frontal lobe lesion.
  • Magnetic resonance imaging (MRI) and positron emission tomography (PET) scans were used to characterize the lesion.
  • Surgical drainage of the cystic component was performed.

Findings:

  • PET scans revealed reduced metabolism in the thalamus and cerebellum, but not the brain stem.
  • MRI showed no significant cerebellar atrophy.

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  • Speech improved post-surgery, but gait ataxia showed minimal change.

    • Implications:

    • This case supports frontal lobe ataxia as a rare clinical entity.
    • Neuroimaging findings suggest the ataxia resulted from interruption of the frontopontocerebellar pathway.
    • The study highlights the role of Brodmann's area 10 in motor control and locomotion.