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Related Experiment Videos

Right parietal infarction with concomitant mutism

J R Chaudhuri1, J Anand, N Shivshankar

  • 1Department of Psychiatric & Neurological Rehabilitation, National Institute of Mental Health and Neuro Sciences, Bangalore, India.

Acta Neurologica Scandinavica
|January 30, 1999
PubMed
Summary

Mutism is typically linked to left brain damage. However, this study details a rare case of mutism caused by right parietal lobe damage in an elderly man, highlighting potential diaschisis effects.

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Area of Science:

  • Neurology
  • Neuroscience
  • Cognitive Science

Background:

  • Right brain damage commonly causes cognitive and behavioral issues.
  • Mutism is usually associated with left or bilateral brain lesions affecting the parietal lobe.

Observation:

  • A case study of an elderly male patient presenting with left faciobrachial monoparesis and mutism.
  • Magnetic Resonance Imaging (MRI) confirmed a right parietal infarct impacting cortical and subcortical areas.
  • The patient exhibited intact auditory-verbal comprehension.

Findings:

  • The patient experienced abrupt and complete recovery from mutism without residual dysarthria.
  • This suggests a rare association between right parietal infarcts and mutism.

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Implications:

  • The findings propose diaschisis or impaired left hemispheric modulation due to right cerebral infarct as potential mechanisms.
  • This presentation may mimic a conversion reaction, underscoring the complexity of brain-behavior relationships.