Unilateral Alpha Subharmonics: A Case Report

H. P. Attarian*, P. A. Pacquiao, S. M. Erickson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Occipital alpha subharmonics are a normal EEG variant. Unilateral occipital slowing, however, is associated with focal dysfunction of that particular side. We report a 10-year-old girl with the incidental EEG finding of unilateral occipital slowing. MRI of her brain was completely normal and on long-term follow up she remained healthy. Based on her clinical history, normal MRI of brain, and the character of the slow posterior rhythms, we conclude that unilateral slow alpha rhythm can be a normal variant akin to alpha subharmonics.

Original languageEnglish (US)
Pages (from-to)32-35
Number of pages4
JournalClinical EEG and Neuroscience
Issue number1
StatePublished - Jan 2001


  • Alpha Subharmonics
  • Electroencephalography
  • Occipital Rhythm

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology


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