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Related Experiment Videos

Unilateral alpha subharmonics: a case report.

H P Attarian1, P A Pacquiao, S M Erickson

  • 1Department of Neurology, Washington University School of Medicine, Box 8111, 660 S. Euclid Ave., St. Louis, MO 63110, USA.

Clinical EEG (Electroencephalography)
|February 24, 2001
PubMed
Summary

Unilateral occipital slowing on an electroencephalogram (EEG) can be a normal variant, not always indicating focal brain dysfunction. This finding in a healthy child suggests a benign possibility, similar to alpha subharmonics.

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Area of Science:

  • Neurophysiology
  • Electroencephalography (EEG)

Background:

  • Occipital alpha subharmonics are recognized as a normal electroencephalogram (EEG) variant.
  • Unilateral occipital slowing on EEG is typically associated with focal neurological dysfunction.

Observation:

  • A case report details a 10-year-old girl with an incidental EEG finding of unilateral occipital slowing.
  • Brain magnetic resonance imaging (MRI) was normal.
  • The patient remained clinically healthy during long-term follow-up.

Findings:

  • The unilateral slow alpha rhythm observed in this patient was deemed a normal variant.
  • This variant is considered akin to occipital alpha subharmonics.

Implications:

  • This case suggests that unilateral slow alpha rhythm may represent a benign EEG variant in certain clinical contexts.

Related Experiment Videos

  • It highlights the importance of integrating EEG findings with clinical presentation and neuroimaging.
  • Further research may clarify the prevalence and significance of this potential normal variant in pediatric EEG.