EEG frequency analysis in demented and nondemented parkinsonian patients

M. Y. Neufeld, S. Blumen, I. Aitkin, Y. Parmet, A. D. Korczyn

Research output: Contribution to journalArticlepeer-review

106 Scopus citations


In an attempt to evaluate EEG changes associated with dementia in Parkinson’s disease (PD), we performed frequency analysis in three groups of 10 subjects each; two with PD, and one normal control group. The PD patient groups were matched for age, sex, severity and duration of disease, but were discordant for the existence of dementia. Normals were age- and sex-matched healthy volunteers. The relative alpha amplitude was significantly decreased in the demented PD patients, unrelated to motor disability. There was a non- significant but consistent trend of increased amplitude in the delta and theta range in the demented PD patients as compared to nondenienled PD subjects and normal controls, as well as increased amplitude in the theta and delta range with more severe motor disability in the nondemenled PD patients.

Original languageEnglish
Pages (from-to)23-28
Number of pages6
JournalDementia and Geriatric Cognitive Disorders
Issue number1
StatePublished - 1 Jan 1994
Externally publishedYes


  • Dementia
  • EEG frequency analysis
  • Motor disability
  • Parkinson’s disease

ASJC Scopus subject areas

  • Geriatrics and Gerontology
  • Cognitive Neuroscience
  • Psychiatry and Mental health


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